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December 20, 2012   

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior” or “the Company”)announces that it has amended the terms of the option agreement to acquire the Gunnison Copper Project (the “Amended Option Agreement”). Previously Excelsior was required to exercise the option on or before January 1, 2013 by making a payment of US$350,000 to the vendor of the Gunnison Copper Project. Under the terms of the Amended Option Agreement, the US$350,000 payment has been restructured as follows:

  • US$150,000 paid on the execution of the Amended Option Agreement;
  • US$150,000 payable on or before January 1, 2014 (this payment may be accelerated if Excelsior completes an equity financing of greater than $2 million); and
  • US$50,000 payable on or before January 1, 2015.
 
The remaining terms of the option agreement have not been amended.
 

About Excelsior

Excelsior is an exploration company with a copper project located within the Copper Porphyry Belt of Arizona.  The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods.  The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s Annual Information Form for the most recently completed financial year or other reports and filings with applicable Canadian securities regulations.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release.. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

November 15, 2012                                               

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior” or “the Company”) announces recovery results for recent metallurgical test work performed on core samples from its Gunnison Copper project in Cochise County, Arizona. The tests were completed at the laboratories of independent consultant, METCON Research, of Tucson, Arizona, under the direction of Dr. Ronald J. Roman, P.E. 

Six leach box tests were completed on whole HQ core (~63.5mm diameter), representing a range of rock types and varying from low permeability (low fracture intensity) to high permeability (high fracture intensity). As expected, the samples with the higher fracture intensity (permeability) gave the higher copper extractions, averaging approximately 51% total copper extraction. 

“We are very pleased with the results from these metallurgical tests,” stated Stephen Twyerould, President and CEO. “They are in line with our PEA and continue to support our view that this project will one day make a significant ISR copper producer.” 

The results of these six leach box tests are summarized in the following table:

Sample # Rock Type Permeability

Grade*

(Total Cu%)

Days

Leached

Extraction

% Total Cu

2 Upper Abrigo Low 0.65 45 32
5 Upper Abrigo High 0.55 45 49
3 Lower Abrigo Moderate 0.55 45 28
4 Middle Abrigo High 0.36 45 52
7 Martin Low 0.80 45 19
8 Martin High 1.93 82 54

*Calculated head grade

 

When factored for the effects of the test procedure, average acid consumption numbers are in line with the Preliminary Economic Assessment (PEA)(see news release dated December 1, 2011 for additional details). A further 17 metallurgical tests are currently underway; designed to explore the relative effects of leach solution acid strength and irrigation flow rate on copper extraction and acid consumption; results are expected before the end of the year. 

The metallurgical test program is being conducted at METCON Research under the supervision of Dr. Ronald J. Roman, P.E., of Leach, Inc., Tucson, Arizona, an independent consultant who is a Qualified Person (QP) as defined by NI43-101. Dr. Roman has reviewed and approved the technical information disclosed above in this news release. The QP verified the underlying test data through his supervision of the program. 

 Project Summary 

The Gunnison Copper Project is located in a remote section of Cochise County in southeastern Arizona. The focus of the project is the North Star deposit, which currently has a total Indicated mineral resource of 3.21 billion pounds of oxide copper (511 M tons at 0.31%) and an Inferred mineral resource of 0.88 billion pounds of oxide copper (159 M tons at 0.28%). This oxide mineral resource has the potential to be mined using in-situ recovery methods. Mineral resources that are not mineral reserves do not have demonstrated economic viability.

 About Excelsior 

Excelsior is an exploration company with a copper project located within the Copper Porphyry Belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production. 

Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in the “Project Summary” and “About Excelsior” sections of this news release.

Further details about Excelsior can be found at:  http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011. 

ON BEHALF OF THE EXCELSIOR BOARD

 "Stephen Twyerould"

President & CEO

 For further information regarding this press release, please contact: 

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018. 

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com
 

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of inferred and indicated mineral resources; (ii) success of exploration activities; (iii) production from the Gunnison Project; (iv) overestimation of acid consumption; (v) copper recovery rates and (vi) the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s Annual Information Form for the most recently completed financial year or other reports and filings with applicable Canadian securities regulations.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release.. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

October 10, 2012           

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) comments on recent developments within the Arizona mining industry that demonstrate the ability of copper projects, and specifically in-situ copper projects, to successfully obtain operating permits.

On September 28th, 2012, Curis Resources Ltd. (TSX: CUV) (“Curis”) announced that the Florence In-situ Copper Project, located in Arizona, had received an Aquifer Protection Permit (APP) for their “Phase 1” in-situ copper recovery operation.

The APP, issued by the Arizona Department of Environmental Quality (“ADEQ”), represents one of the most significant permits in the lead-up to production. For in-situ recovery projects, this permit includes a number of operational, closure and post closure requirements that ensure all aspects of the injection/recovery wellfield and processing plants will be designed to meet the Best Available Demonstrated Control Technology guidelines provided by the ADEQ.

As a further validation of the improved permitting climate in Arizona, earlier this year, Augusta Resource Corporation (TSX: AZC) (“Augusta”) was also granted an Aquifer Protection Permit for the Rosemont Copper Project.  

Commenting on these developments, Stephen Twyerould, the President and CEO of Excelsior stated, “These results are very positive for Curis, Excelsior and the larger community of copper miners in Arizona. We congratulate Curis and Augusta on receiving this key permit as we look to move our company into the same position in the near future. Given the recent issuance of these permits and the remote location of Excelsior’s Gunnison Project, we do not see permitting as a barrier to production for an in-situ copper project such as ours.”  

Excelsior intends to begin collecting data later this year that will be supplied with applications to the federal and state agencies that are responsible for administering and issuing operating permits. To date, all state and federal permitting for drilling, pumping and hydrological studies at the Gunnison Project have been granted in a timely manner without objection.

Dr. Twyerould concluded, “The state of Arizona is clearly open for business. We have been very pleased with our experience in working with the various regulatory bodies and stakeholders when applying for our work program permits, and we look forward to navigating the rest of the permitting process.”

Commenting on these recent developments, the Chairman of Excelsior, Mark Morabito, added, “The essential components required to take our copper deposit into production are aligning at Gunnison. All of the geological data compiled to date indicates that we have an in-situ recovery project that has the potential to return positive economic results with minimal environmental impact. Our remote location is ideal, and with this recent granting of an operations permit for another in-situ copper project, we have proof that the state of Arizona remains one of the most attractive mining regions within the United States.”


About Excelsior

Excelsior is an exploration and development company with a copper project located within the Copper Porphyry Belt of Arizona.  The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods.  The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Excelsior’s exploration work on the Gunnison Project is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation, statements regarding future permits, economic results, environmental impact, the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s Annual Information Form for the most recently completed financial year . Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.


Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 18, 2012

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) announces that it has granted incentive stock options to purchase a total of 2,700,000 common shares of Excelsior at an exercise price of $0.30 per share to certain directors, officers, and consultants of Excelsior. The options vest in equal quarterly instalments of a period of 24 months and have a term of five years.

About Excelsior
Excelsior is an exploration and development company with a copper project located within the Copper Porphyry Belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.
Further details about Excelsior can be found at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD
"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation, the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; issues in obtaining required permits; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements or other reports and filings with applicable Canadian securities regulators. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.


Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release

July 31, 2012

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce the final assay results from the 10,502 foot (3,150 metre) diamond drill program on its Gunnison Copper Property located within the copper porphyry belt in southern Arizona. Highlights are shown in the following table.

Drill Results
Drill Hole From (feet) To (feet) Interval (feet) Total Copper (%)
NSD-23 557 1500 943 0.24
NSD-24 751 1350 599 0.79
  1540 1890 350 0.33
NSD-25 637 1500 863 0.49
NSD-26 500 1168 668 0.38
NSD-27 420 1004.5 584.5 0.27

“Drill hole 24 represents one of the best intersections that we have seen to date at Gunnison; this is very encouraging,” stated Dr. Stephen Twyerould, President and Chief Executive Officer of Excelsior. “These results confirm what we were expecting and provide more evidence that Gunnison is a robust copper deposit.”

The Gunnison project has an NI 43-101 compliant copper resource of 3.21 billion pounds Indicated oxide copper (511 million tons at 0.31% copper) and an additional 0.88 billion pounds Inferred oxide copper (159 million tons at 0.28%).

All samples are prepared from manually split half-core sections on site in Arizona. Split drill core samples are then sent to Skyline Assayers & Laboratories in Tucson, Arizona for Total Copper and Sequential Copper analyses. Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the Copper Porphyry Belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Qualified Person

Excelsior’s exploration work on the Gunnison Property is supervised by Stephen Twyerould, Ph.D., fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and is responsible for the technical information contained in this presentation.

Further details about Excelsior can be found at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation, the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; issues in obtaining required permits; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements or other reports and filings with applicable Canadian securities regulators. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

June 29, 2012     

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce that it has closed its previously announced non-brokered private placement offering (the “Offering”) of units of Excelsior ("Units"). Specifically, Excelsior raised aggregate gross proceeds of C$1,015,000, through the issuance of 3,383,334 Units at a price of $0.30 per Unit. Each Unit consists of one common share and one half of one common share purchase warrant (each whole warrant a “Warrant”). Each Warrant shall be exercisable to acquire one common share for a period of 24 months at an exercise price equal to $0.50.

At any time after four months and one day from the date of the closing of the Offering, if the volume weighted average trading price of the common shares of Excelsior on the TSX Venture Exchange is greater than $0.70 per share for 20 consecutive trading days, Excelsior may give written notice to warrant holders that the Warrants will expire 30 calendar days after the date of such notice.

The Company intends to use the net proceeds of the Offering to continue to advance its Gunnison Copper Project and for general corporate and working capital purposes.

Excelsior paid a cash finder's fee on certain subscriptions equal to 5% of the gross proceeds received from such subscriptions. Excelsior also issued 152,500 non-transferrable finder’s warrants ("Finder's Warrants"). Each Finders Warrant shall be exercisable to acquire one common share for a period of 24 months at an exercise price equal to $0.50.

All securities issued in the Offering are subject to a statutory four month hold period expiring on October 29, 2012.

The securities being offered hereby have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state or province in which such offer, solicitation or sale would be unlawful.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the Copper Porphyry Belt of Arizona.  The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods.  The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com.  

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

NOT FOR DISSEMINATION IN THE UNITED STATES OR FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES


Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the use of proceeds of the offering, the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; issues in obtaining required permits; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements or other reports and filings with applicable Canadian securities regulators. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

June 25, 2012

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce that it intends to undertake a non-brokered private placement to raise up to a total of $1,000,000 through the issuance of 3,333,333 units of Excelsior (the “Units”) at a price of $0.30 per Unit (the “Offering”). Each Unit will consist of one common share and one half of one common share purchase warrant (each whole warrant a “Warrant”). Each Warrant shall be exercisable to acquire one common share for a period of 24 months at an exercise price equal to $0.50.

At any time after four months and one day from the date of the closing of the Offering, if the volume weighted average trading price of the common shares of Excelsior on the TSX Venture Exchange is greater than $0.70 per share for 20 consecutive trading days, Excelsior may give written notice to warrant holders that the Warrants will expire 30 calendar days after the date of such notice.

The Company intends to use the net proceeds of the Offering to continue to advance its Gunnison Copper Project and for general corporate and working capital purposes.

The Offering will be non-brokered; however, Excelsior will pay finder’s fees in accordance with the rules and policies of the TSX Venture Exchange. The Offering is subject to the approval of the TSX Venture Exchange.

The securities being offered hereby have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state or province in which such offer, solicitation or sale would be unlawful.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona.  The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods.  The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com.  

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

NOT FOR DISSEMINATION IN THE UNITED STATES OR FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES


Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Offering, the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; issues in obtaining required permits; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements or other reports and filings with applicable Canadian securities regulators. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

May 17, 2012   

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior” or “the Company”) is pleased to provide an update on its on-going 2012 drilling program at the Gunnison Copper Project, located in southern Arizona. The program is designed to acquire geological, metallurgical and hydrological data with the aim of completing a Pre-Feasibility Study on Gunnison by the end of 2012.

“We’re pleased with the progress of our 2012 program,” stated Stephen Twyerould, President and CEO of Excelsior. “The program has been designed to advance the project in a number of areas and the timely acquisition of this data will enable us to achieve our goal of completing the Gunnison Pre-Feasibility Study by year’s end.”

2012 Work Program Details

Metallurgy
The metallurgical component of three holes, totaling 3,178 feet (968.7 metres) has been completed with samples sent to Metcon Research of Tucson, AZ for analysis. This analysis will involve running in-situ recovery simulation tests, conducted to support previous results indicating favorable metallurgical conditions.

Resource Definition and Upgrade
The geological component of the program, designed to upgrade and expand the existing mineral resource, is approximately 50% complete with the first set of assay results expected by June. Approximately 19 holes, totaling 24,000 feet (7,316 metres) are planned for this phase of the program with a new resource estimate anticipated for later in the year.

Hydrology
Drilling has begun on the hydrological test holes, which constitute the third and final component of this year’s drilling. Up to 10 hydrological test wells are planned with the goal of producing an initial hydrological model. Monitoring and observation wells will also be added later this year. Data collected from these wells will be required for the permitting process as the project continues to advance.

The data acquired from this current drilling program will be combined with the existing dataset for use in the Pre-Feasibility Study to optimize wellfield design, leaching solution composition, as well as provide critical information for groundwater quality control and ultimately, project reclamation, all of which will be essential as the project moves forward. The Pre-Feasibility Study is scheduled for completion in December. This key study will provide wellfield design parameters, annual copper production rates and a new financial model. Drilling is being carried out by B-J Drilling Company, Inc. of Benson, AZ and Godbe Drilling LLC of Montrose CO. Downhole geophysical surveys are being conducted by Southwest Exploration Services, LLC of Chandler, AZ. Hydrologic testing is being conducted by the engineering and environment firm Haley & Aldrich, Inc.

Project Summary

The Gunnison Copper Project is located in a remote section of Cochise County in southeastern Arizona. The focus of the project is the North Star deposit, which currently has a total Indicated mineral resource of 3.21 billion pounds of oxide copper (511 M tons at 0.31%) and an Inferred mineral resource of 0.88 billion pounds of oxide copper (159 M tons at 0.28%). This oxide mineral resource has the potential to be mined using in-situ recovery methods. Mineral resources that are not mineral reserves do not have demonstrated economic viability.

About Excelsior

Excelsior is an exploration company with a copper project located within the Copper Porphyry Belt of Arizona.  The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods.  The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of inferred and indicated mineral resources; (ii) success of exploration activities; (iii) statements about the details of the 2012 work program; (iv) the completion of a pre-feasibility study; (v) the future exploration on and the development of the Gunnison Project; (vi) the permitting process and (vii)  the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s Annual Information Form for the most recently completed financial year or other reports and filings with applicable Canadian securities regulations. 

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Readers are cautioned that the foregoing lists of factors are not exhaustive. The forward-looking information contained in this news release is expressly qualified by this cautionary statement. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

March 29, 2012   

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce that it has commenced its 2012 drilling program on the Gunnison Copper Project, located in southern Arizona. The program has begun with the utilization of both a diamond drill rig and a reverse circulation drill rig. The first series of drill holes are being completed in order to acquire additional metallurgical data. Subsequent drilling will focus on additional hydrological and geological data acquisition, with the goal of the entire 2012 program being the completion of a pre-feasibility study by year’s end.

“We are excited to be back drilling on Gunnison again,” stated Stephen Twyerould, President and CEO of Excelsior. “We have set an ambitious program for 2012 and, now that it is underway, we are looking forward to making significant progress in advancing the Gunnison project as quickly as possible.”

The program is designed to advance the project geologically, hydrologically and metallurgically. The resultant data will be used to optimize well field design, leaching solution composition, as well as provide critical information for groundwater quality control and ultimately, project reclamation, all of which will be essential as the project moves forward in the permitting process.

Project Summary

The Gunnison Copper Project is located approximately 65 miles southeast of Tucson, AZ. The focus of the project is the North Star deposit, which currently has a total indicated mineral resource of 3.21 billion poundsof oxide copper (511 M tons at 0.31%) and an inferred mineral resource of 0.88 billion pounds of oxide copper (159 M tons at 0.28%). This oxide mineral resource has the potential to be mined using in-situ recovery methods. The Gunnison property also has the added benefit of being situated in a very remote location, near an existing mining operation. 

Mineral resources that are not mineral reserves do not have demonstrated economic viability.

About Excelsior

Excelsior is an exploration company with a copper project located within the copper porphyry belt of Arizona.  The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods.  The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production. 

Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of inferred and indicated mineral resources; (ii) success of exploration activities; (iii) statements about the details of the 2012 work program; (iv) the completion of a pre-feasibility study; (v) the future exploration on and the development of the Gunnison Project; (vi) the permitting process and (vii)  the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, iron ore and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for iron ore and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s Annual Information Form for the most recently completed financial year or other reports and filings with applicable Canadian securities regulations. 

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Readers are cautioned that the foregoing lists of factors are not exhaustive. The forward-looking information contained in this news release is expressly qualified by this cautionary statement. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

March 20, 2012

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior” or the “Company”) is pleased to announce that it has engaged Haley & Aldrich, a national underground and environmental consulting firm with significant project permitting expertise, to develop a comprehensive permitting plan for the North Star deposit at the Company’s Gunnison Copper Project in southeast Arizona.

Excelsior has engaged Haley & Aldrich to support the completion of two related tasks;
      1.  To design a hydrological program that will lead to a more complete understanding of North Star’s hydro-geological conditions. 
      2.  To provide environmental, engineering and strategic services related to hydrologic studies that will lead to the successful permitting of the project.

Eric Mears, Vice President and Manager of Mining Services leads a team at Haley & Aldrich that has been intimately involved in the permitting of the Florence in-situ copper recovery project beginning with Magma Copper in 1996.  The team has also participated on other in-situ development and optimization projects in the southwest US. This proven expertise with in-situ recovery permitting and operation strengthens Excelsior’s credibility with the regulatory and investment community.

Speaking on the engagement, Mr. Mears stated, “Haley & Aldrich generates value for our clients by integrating our engineering and environmental expertise with lean principles and by sharing what we’ve learned in our own journey toward sustainability. Excelsior exemplifies this ethos by visualizing a project that vastly reduces the typical impacts that are associated with traditional open pit projects. Assuming the Gunnison Project reaches the production stage, Excelsior will employ advanced mining techniques that will provide for an efficient operation with limited environmental impacts.  Haley & Aldrich is pleased to be leading the Gunnison Project through the myriad of state and federal permitting required to bring this facility into full operation.”

Stephen Twyerould, President and CEO of Excelsior added, “We are extremely fortunate to have retained a firm with such a wealth of direct permitting experience related to in-situ copper projects in Arizona. We look forward to successfully completing the permitting process with Haley & Aldrich.”

About Haley & Aldrich
For over 50 years, Haley & Aldrich has been advising mining companies, developers, major institutions and Fortune 100 clients on their environmental and geotechnical challenges. Established in 1957 with a focus on underground engineering and problem solving, Haley & Aldrich has built an impressive resume of more than 25,000 engineering and environmental consulting projects.  With more than 25 offices in the United States, Haley & Aldrich is recognized for strategic environmental, engineering, and management consulting services based on a tradition of specialized capabilities in the geosciences.  The firm’s sophisticated mining practice delivers a full range of environmental, geotechnical and water resource services for metals, industrial minerals and construction materials clients.  

About Excelsior
Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona.  The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods.  The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production. Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the completion of the permitting process, the efficiency and environmental impacts of future operations, the future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; issues in obtaining required permits; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements, the “Risk Factors” section of the Company’s Annual Information Form for the year ended December 31, 2010 or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

March 5, 2012  

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce the details of its 2012 work program for the Gunnison Copper Project, located in southern Arizona. Building on the strong positive results from the Preliminary Economic Assessment (PEA), the proposed $7.3 M program is aimed at completing a pre-feasibility study this year and will include:
•    5 diamond drill holes for metallurgical testing, with up to 10 column leach tests
•    5 percussion holes (wells) for base line environmental studies
•    Up to 6 large diameter percussion holes for hydrological test wells
•    Extensive geophysical testing for hydrology
•    Approximately 18 diamond drill holes for structural, geological and resource definition
•    Engineering studies for the pre-feasibility study

“After a very successful 2011, we are excited to kick-off our 2012 work program, with the goal of completing a pre-feasibility study by the end of the year,” stated Stephen Twyerould, President and CEO of Excelsior. “We are confident that by initiating a number of the necessary activities simultaneously, we will be able to maintain our proposed timeline for completion of pre-feasibility in 2012.”

The program is designed to advance the project geologically, hydrologically and metallurgically. The resultant data will be used to optimize well field design, leaching solution composition, as well as provide critical information for groundwater quality control and ultimately, project reclamation. Optimizing all the various aspects of the project will enable Excelsior to improve on the Gunnison Project’s already impressive positive PEA results.

Highlights of the North Star Gunnison Copper Project PEA include:
•    After-Tax NPV of US$561.7 million (discounted at 7.5%, using US$2.50 copper price)
•    After-Tax IRR of 30%
•    Payback period of 3.6 years
•    Initial capital costs of US$324.7 million (including SXEW plant, Infrastructure and Acid Plant)
•    Total operating costs of US$0.68 per pound (averaged over life of mine)
•    Royalty of US$0.01 per pound
•    Annual production rate of 85.65 million pounds of copper
•    Commercial production commencing in 2015, with a mine life of 20 years

The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the conclusions reached in the PEA will be realized.

Project Summary

The Gunnison Copper Project is located approximately 65 miles southeast of Tucson, AZ. The focus of the project is the North Star deposit, which currently has a total NI 43-101 indicated resource of 3.21 billion pounds of oxide copper (511 M tons at 0.31%) and an inferred resource of 0.88 billion pounds of oxide copper (159 M tons at 0.28%). This oxide resource has the potential to be mined using in-situ recovery methods. The Gunnison property also has the added benefit of being situated in a very remote location, near an existing mining operation. 
Mineral resources that are not mineral reserves do not have demonstrated economic viability.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona.  The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods.  The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production. Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the details of the 2012 work program, the completion of a pre-feasibility study, the mineral resource estimate, the future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; issues in obtaining required permits; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 23, 2012

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) announces that M Partners has initiated equity research coverage of Excelsior.

M Partners’ equity research can be accessed by contacting Ingrid Rico at M Partners via email at This email address is being protected from spambots. You need JavaScript enabled to view it..

All reports on Excelsior prepared by analysts represent the views of such analysts and are not necessarily those of Excelsior.  Excelsior is not responsible for the content, accuracy or timelines of any analyst’s website. 

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production. 

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

 

ON BEHALF OF THE EXCELSIOR BOARD
"Mark Morabito"
Chairman of the Board

T: 604-681-8030
F: 604-681-8039
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

For further information regarding this press release, please contact:

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240

Cautionary Note Regarding Forward-Looking Information

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 16, 2012

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce the appointment of Mr. Jim Kolbe and Mr. Steven Lynn to the Board of Directors of Excelsior, effective immediately.

Mr. Kolbe is a veteran Republican member of the US House of Representatives for Arizona’s 8th congressional district, having retired after serving 11 terms from 1985 to 2007. Excelsior’s Gunnison Copper Project is located in Arizona’s 8th congressional district. During his tenure as congressman, Mr. Kolbe served as chair of the Subcommittee on Foreign Operations, Export Financing and Related Programs of the House Appropriations Committee. He was also instrumental in the drafting and passage of the North American Free Trade Agreement (NAFTA). After retiring from office, President Barack Obama appointed Mr. Kolbe to the Advisory Committee for Trade Policy and Negotiations in September of 2010. Currently Mr. Kolbe is a fellow at the German Marshall Fund, as well as a consultant for McLarty Associates, a strategic advisory and advocacy firm, offering high-level strategic consultancy services to a broad spectrum to U.S. and multinational companies.

Mr. Lynn recently retired from his position as Vice President and Chief Customer Officer at both UniSource Energy Corporation and Tucson Electric Power Company (TEP). Mr. Lynn joined UniSource Energy and TEP in 2000. Prior to that, he spent sixteen years as CEO and owner-partner at Nordensson Lynn & Associates, Inc., one of Arizona’s leading marketing and communications firms based in Tucson. Active in his community, Mr. Lynn currently serves as Chairman of the Arizona Early Childhood Development and Health Board, as well as Chairman of the University of Arizona College of Social and Behavioral Sciences Advisory Board.

“I am extremely pleased to be able to welcome two long-time Arizona residents of the calibre of Jim and Steve to the Excelsior board,” stated Mark Morabito, Chairman of the Board for Excelsior. “The breadth of their combined experience, spanning both government and the private sector, will be invaluable as we work to advance the Gunnison Copper Project to production.”

Excelsior has granted certain directors and officers, under the terms of its stock option plan, options to purchase up to 1,441,333 common shares at a price of $0.73 per share. The options are subject to vesting over a two year period and have an expiry date of February 15, 2017.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD
"Mark Morabito"
Chairman of the Board

 

T: 604-681-8030
F: 604-681-8039
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

For further information regarding this press release, please contact:
Excelsior Mining Corp
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240

 
Cautionary Note Regarding Forward-Looking Information

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 14th, 2012

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”)
 announces that Euro Pacific Canada Inc. (“Euro Pacific”) has initiated equity research coverage of Excelsior.

Euro Pacific’s equity research is posted on their corporate website at  http://www.europac.ca/ and can be accessed by contacting Mr. Merrill McHenry, MBA, CFA, at Euro Pacific, via email at This email address is being protected from spambots. You need JavaScript enabled to view it.

All reports on Excelsior prepared by analysts represent the views of such analysts and are not necessarily those of Excelsior.  Excelsior is not responsible for the content, accuracy or timelines of any analyst’s website.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at:  http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

 
ON BEHALF OF THE EXCELSIOR BOARD

 "Mark Morabito"
Chairman of the Board

 

T: 604-681-8030
F: 604-681-8039
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

 For further information regarding this press release, please contact:
Excelsior Mining Corp
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240

Cautionary Note Regarding Forward-Looking Information

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 13, 2012

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce that it has filed a National Instrument (“NI”) 43-101 Technical Report dated November 18, 2011 on SEDAR at www.sedar.com. The Report is with respect to Excelsior’s Preliminary Economic Assessment (“PEA”) on the Gunnison Copper Project in southern Arizona, the results of which were announced in a December 1, 2011 press release.

Highlights of the North Star Gunnison Copper Project PEA include:
• After-Tax NPV of US$561.7 million (discounted at 7.5%, using US$2.50 copper price)
• After-Tax IRR of 30%
• Payback period of 3.6 years
• Initial capital costs of US$324.7 million (including SXEW plant, Infrastructure and Acid Plant)
• Total operating costs of US$0.68 per pound (averaged over life of mine)
• Royalty of US$0.01 per pound
• Annual production rate of 85.65 million pounds of copper
• Commercial production commencing in 2015, with a mine life of 20 years


Table 1. NPV Comparis
on of Acid Plant and Base Case Scenarios

 
 
Acid Plant
Base Case
Discount Rate
 
7.50%
7.50%
Pre-Tax NPV
US$000's
883,034
776,061
Post-Tax NPV
US$000's
561,659
511,681
Discount Rate
 
8.00%
8.00%
Pre-Tax NPV
US$000's
831,857
 732,842
Post-Tax NPV
US$000's
526,098
480,924
 

NI 43-101 requires disclosure of any differences between the initial news release and the final Report. There was only one difference in the final report which is the discount rate for the calculation of the “Acid Plant” scenario is 7.5% in the Report as compared to 8% in the initial news release. The after-tax NPV for the Acid Plant scenario, discounted at 8% is US$526.1 million. The pre- and post-tax NPV’s for the two scenarios (Acid Plant vs. Base Case (no acid plant)) at the two different discount rates are summarized in Table 1 above.

The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the conclusions reached in the PEA will be realized.

Project Summary

The Gunnison Copper Project is located approximately 65 miles southeast of Tucson, AZ. The project, which includes both the North Star and South Star deposits, currently has a total NI 43-101 indicated resource of3.21 billion pounds of oxide copper (511 M tons at 0.31% at the North Star deposit) and an inferred resource of 1.26 billion pounds of oxide copper (221 M tons at 0.29%; 159 M tons at North Star and 62 M tons at South Star). These oxide resources have the potential to be mined using in-situ recovery methods. The Gunnison property also has the added benefit of being situated in a very remote location, near an existing mining operation. Mineral resources that are not mineral reserves do not have demonstrated economic viability.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production. Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the timing and amount of future production, the mineral resource estimate, the results of the PEA, the future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; issues in obtaining required permits; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 11, 2012 

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce the results of an Economic Impact Study (“EIS”) of the Gunnison Copper Project, located in southern Arizona. The study, completed by researchers at the L.W. Seidman Research Institute, W.P. Carey School of Business, Arizona State University, Tempe, AZ, illustrates that the project would generate significant positive economic benefit at both the State and County level.

Highlights of the Gunnison Copper Project EIS include:

  •    Creation of an average of 704 jobs annually state-wide
    •    131 direct, on-site jobs; 573 in-direct or “secondary” jobs
  •    US$2.35 billion added to Arizona’s Gross State Product
  •    US$214 million in additional State revenue generated directly from the project

Note: the numbers and dollar values quoted above are all based on Excelsior building its own acid plant and span the entire 28 year life of the project.

“As this Economic Impact Study indicates, the robust financial outcomes of the Gunnison Project’s PEA show significant benefit to local and state communities, not just in job creation but overall wealth creation,” stated Stephen Twyerould, President and CEO of Excelsior. “We are very happy with the outcome and look forward to moving the project forward.”

Using the data from the Gunnison Project’s Preliminary Economic Assessment (“PEA”) (see news release dated December 1, 2011), this Economic Impact Study examined two scenarios, one in which Excelsior builds its own acid plant and one in which it acquires acid from a commercial supplier for the life of the project.

As highlighted in Tables 1 & 2 below, the EIS illustrates that either scenario could create significant positive benefits for the State, as well as Cochise County. Table 1 displays the significant employment benefits that the project should generate. During the project’s 28 year life span, it is forecast to create an average of 704 jobs per year in the “acid plant” scenario and 715 jobs per year in the “base case” (no acid plant) scenario, state-wide. With respect to the annual average of 704 jobs created in the “acid plant” scenario, 131 jobs are direct employment on-site and the remaining 573 are “secondary” jobs created in support of the project or due to the economic benefits the project brings to the State and the County. Thus, every direct job created by Excelsior creates an average of 4 indirect jobs in other sectors of Arizona’s economy.

As illustrated in Table 2, the State and County would both see a significant increase in revenue over the 28 year life span of the project. The model estimates that the Gunnison Copper Project would contribute US$2.4 billion to Arizona’s Gross State Product (GSP) in the “base case” scenario and US$2.35 billion in the “acid plant” scenario. GSP is defined as a state’s contribution to the nation’s Gross Domestic Product (GDP). Cochise County’s GSP is the contribution of Cochise County economic activity to Arizona GSP, and hence to U.S. GDP. With respect to state revenues, in the form of taxes and fee collection, the project would add an additional US$221 million to the State Treasury in the “base case” and US$214 million with an “acid plant”. Cochise County alone would see an average annual increase in its revenues of US$3.2 million in the “base case” scenario and US$3.1 million in the “acid plant” scenario.

Both scenarios used the following parameters over the 20 year production life of the project.

  •   annual production rate of approximately 85 million pounds of copper
  •   copper selling price of US$2.50 per pound
  •   state tax rate of 6.97%, and
  •   a federal tax rate of 35%.

Table 1. Employment Highlights of the Economic Impact Study for the Gunnison Project.

 
Annual Average Employment by Phase
Annual Average Employment Entire Project
Impact Category
Phase
Production Phase
Reclamation Closure Phase
 
2012 - 2014
2015 - 2034
2035 - 2039
2012 - 2039
 
Base Case
Acid Plant Case
Base Case
Acid Plant Case
Base Case
Acid Plant Case
Base Case
Acid Plant Case
Arizona
528
715
830
785
364
373
715
704
Cochise County
203
331
290
286
105
70
248
252
Source: REMI Model of Arizona and Cochise Co. economies

 

Table 2. Revenue Highlights of the Economic Impact Study for the Gunnison Project.

Impact Category
Pre-Production
Phase
Production
Phase
Reclamation/ Closure
Phase
Cumulative Totals
Entire 28 years of Project
Gross State Product
Cumulative Gross State Product by Phase (US millions)
GSP (US millions)
 
2012 - 2014
2015 - 2034
2035 - 2039
2012 - 2039
Base Case
Acid Plant Case
Base Case
Acid Plant Case
Base Case
Acid Plant Case
Base Case
Acid Plant Case
Arizona
$138.5
$187.8
$2,013.5
$1,903.7
$258.6
$264.1
$2,410.6
$2,355.6
Cochise County
$36.2
$59.5
$464.9
$442.7
$49.0
$35.6
$550.1
 
State Revenue
Cumulative State Revenue by Phase (US millions)
State Revenue (US millions)
Arizona
$13.2
 
$176.6
$165.6
$31.5
$30.8
$221.3
$214.4
Cochise County
$8.1
$11.9
$71.3
$65.5
$10.3
$9.0
$89.7
$86.4
Source: REMI Model of Arizona and Cochise Co. economies

 

The economic forecasts used in this study are based on an Arizona-specific version of the Regional Economic Models Inc. (“REMI”) regional forecasting model to produce numeric estimates of the impact of a business upon the economy.  This is a dynamic forecasting and analysis tool developed by Regional Economic Models Inc., which is recognized by the business and academic communities as the leading economic modeling tool available. REMI is also an open model in that it explicitly accounts for trade and migration flows in and out of the state, and between counties.  The use of a county level model enables a more detailed disaggregation of results to occur, thereby estimating the economic impacts that "leak" into other counties in Arizona. The version of the REMI forecasting model used in this study is similar to the version currently in use by the Arizona Department of Commerce, the Arizona Joint Legislative Budget Committee, the Arizona Department of Housing and Arizona State University.

A complete explanation of the model and discussion of the empirical estimation of the parameters/equations can be found at www.remi.com

Further details regarding the PEA that the EIS is based on can be found in Excelsior’s news release dated December 1, 2011 and filed on SEDAR at www.sedar.com. The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the conclusions reached in the PEA will be realized.

 

Project Summary

The Gunnison Copper Project is located approximately 65 miles southeast of Tucson, AZ. The project, which includes both the North Star and South Star deposits, currently has a total NI 43-101 indicated resource of 3.21 billion pounds of oxide copper (511 M tons at 0.31% at the North Star deposit) and an inferred resource of 1.26 billion pounds of oxide copper (221 M tons at 0.29%; 159 M tons at North Star and 62 M tons at South Star). These oxide resources have the potential to be mined using in-situ recovery methods. The Gunnison property also has the added benefit of being situated in a very remote location, near an existing mining operation. Mineral resources that are not mineral reserves do not have demonstrated economic viability.

About L.W. Seidman Research Institute

The L. W. Seidman Research Institute, which is independent of Excelsior, serves as a link between the local, national, and international business communities and the W.P. Carey School of Business at Arizona State University.  Utilizing a staff of experienced economists, and tools that support sophisticated statistical modeling and computer-based planning, the Institute collects, analyzes, and disseminates information about local economies, benchmarks industry practices, and identifies emerging business research issues that affect productivity and competitiveness. The Gunnison Economic Impact Study was co-authored by Mr. Dennis Hoffman and Ms. Eva Madly, both of whom are independent of Excelsior.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production. Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star Deposit dated August 31, 2011, as revised October 25, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

 

"Stephen Twyerould"

President & CEO

For further information regarding this press release, please contact:

Excelsior Mining Corp.

Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs

T: 604-681-8030

E: This email address is being protected from spambots. You need JavaScript enabled to view it.

www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the timing and amount of future production, future economic benefits from the Gunnison Project including jobs, GDP, personal income and revenue forecasts, results of the PEA, the future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; issues in obtaining required permits; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

December 20, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) announces that Northern Securities Inc. (“Northern Securities”) has initiated equity research coverage of Excelsior.

Northern Securities’ equity research is posted on their corporate website at www.northernsi.com and can be accessed by users upon registration or by contacting Mr. Kwong-Mun Achong Low, MBA, at Northern Securities, via email at This email address is being protected from spambots. You need JavaScript enabled to view it..

All reports on Excelsior prepared by analysts represent the views of such analysts and are not necessarily those of Excelsior. Excelsior is not responsible for the content, accuracy or timelines of any analyst’s website.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star Deposit dated August 31, 2011, as revised October 25, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark Morabito"
Chairman of the Board

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Alderon undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

December 2, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce the appointment of Samuel Yik as Chief Financial Officer, effective as of December 1, 2011.

Mr. Yik is a Chartered Accountant with over 17 years of financial and international business experience in resource based public companies with market capitalizations ranging from $10 million to $2 billion. He spent the past seven years in senior level management roles in the mining industry. Mr. Yik has experience with both exploration and commercially producing mining companies and was formerly the Chief Financial Officer for a mineral exploration company which is dually listed on both the TSX-V and NYSE AMEX. Mr. Yik also holds a Bachelor’s degree in Commerce from the University of British Columbia.

“We are fortunate to be able to welcome Sam to the Excelsior team,” stated Stephen Twyerould, President & CEO of Excelsior. “His experience on both the exploration and mining sides of our industry will be invaluable as we develop the Gunnison Copper Project.”

In order to make way for Mr. Yik, Ms. Atwal has resigned as Chief Financial Officer of Excelsior, as of the effective date of Mr. Yik’s appointment. Excelsior and its Board of Directors would like to thank Ms. Atwal for her leadership and direction during her tenure as CFO.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

For further information regarding this press release, please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the timing of the future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statements or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and the company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

December 1, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce the results of the Preliminary Economic Assessment (“PEA”) on the North Star Deposit of the Gunnison Copper Project, located in southern Arizona. The PEA was completed by M3 Engineering & Technology Corporation (“M3”) of Tucson, AZ and is effective as of November 18, 2011. The complete report will be filed on SEDAR and Excelsior’s website within 45 days of this news release.

Highlights of the North Star Gunnison Copper Project PEA include:

  • After-Tax NPV of US$561.7 million (discounted at 8%, using US$2.50 copper price)
  • After-Tax IRR of 30%
  • Payback period of 3.6 years
  • Initial capital costs of US$324.7 million (including SXEW plant, Infrastructure and Acid Plant)
  • Total operating costs of US$0.68 per pound (averaged over life of mine)
  • Royalty of US$0.01 per pound
  • Annual production rate of 85.65 million pounds of copper
  • Commercial production commencing in 2015, with a mine life of 20 years

“We are extremely pleased with the results from this PEA. These results support what we have been saying from the beginning, that copper extraction at Gunnison via ISR has the potential to generate outstanding financial returns,” says Stephen Twyerould, President and CEO of Excelsior. “These results show that our low capital costs and very low per pound operating costs provide the project with significant margins, which can act as a buffer from commodity market volatility.”

As highlighted in Table 1 below, the PEA illustrates very strong project economics in both the “Acid Plant” and “Base Case” (no acid plant) scenarios, with the Acid Plant option adding an additional US$80.7 million to the project NPV. Based on an annual production rate of 85.65 million pounds, the PEA indicates that including an Acid Plant as a component of the project, generates an after-tax Net Present Value (“NPV”) of US$561.7 million, at a cash flow discount rate of 8%. The after-tax internal rate of return (“IRR”) for this option is 30%. Initial capital expenditures for this option (including contingency) are estimated at US$324.7 million.

Without an Acid Plant, the project still has a significant after-tax NPV of US$480.9 million and an IRR of 34%, at an 8% discount rate. Initial capital expenditures for this “Base Case” option are US$239.9 million. Details of both financial models are shown in Table 1 below.

Both scenarios used the following parameters over the 20 year life of the project.

  • copper selling price of US$2.50 per pound,
  • total copper recovery of approximately 41.8% of the indicated plus inferred oxide resources
  • average of 9 pounds of acid consumed for every pound of copper produced
  • acid price of US$100/ton for the Base Case and US$42.2/ton for the Acid Plant option
  • state tax rate of 6.97%, and
  • a federal tax rate of 35%.

The North Star Deposit currently contains an indicated oxide copper resource of 3.21 billion pounds (511 million tons at 0.31% copper) and an additional inferred oxide copper resource of 0.88 billion pounds (159 million tons at 0.28% copper).

Table 1. Results of the Preliminary Economic Assessment on the North Star Deposit.

Excelsior Financial Model 2011 Unit Acid Plant Cost/lb Base Case Cost/lb
Copper Cathode sold 
Copper Price 
Gross Revenue
MMlb 
$/lb 
$000's
1,706 
2.50 
4,265,436


-
1,706 
2.50 
4,265,436


-
Royalties $000's (19,618) (0.01) (19,618) (0.01)
Operating Costs 
Production (Wellfield) 
SXEW 
G&A 
Sub-total Operating Costs

$000's 
$000's 
$000's 
$000's

(635,708) 
(415,224) 
(108,198) 
(1,159,130)

(0.37) 
(0.24) 
(0.06) (0.68)

(1,032,833) 
(463,504) 
(108,198)
(1,604,535)

(0.61) 
(0.27)
(0.06) 
(0.94)
Initial Capital Costs 
Production (Wellfield) 
SXEW + Infrastructure 
Owners Costs 
Acid Plant 
Sub-total Initial Capital Costs

$000's 
$000's 
$000's
$000's 
$000's

(83,999)
(146,294)
(9,650)
(84,808)
(324,751)

(0.05) 
(0.09)
(0.01)
(0.05)
(0.19)

(83,999)
(146,294)
(9,650)
-
(239,943)

(0.05)
(0.09)
(0.01) 
-
(0.14)
Sustaining Capital Costs $000's (348,295) (0.20) (339,597) (0.20)
Taxes $000's (762,508) (0.45) (615,248) (0.36)
NPV and IRR 
Discount Rate 
Pre-Tax Cash Flow 
Pre-Tax NPV 
Pre-Tax IRR 
Payback (years)

Post-Tax Cash Flow 
Post-Tax NPV 
Post-Tax IRR 
Payback (years)

$000's 
$000's 

$000's 
$000's


8.00% 
2,317,799 
883,034 
40% 
2.7

1,555,292 
561,659 
30% 
3.6

 
8.00% 
1,984,965
732,842 
47% 
2.1

1,369,718
480,924 
34% 
3.2

 

Sustaining capital costs include reclamation and rehabilitation costs of $23.8 million for the Acid Plant option and $15.1 million for the “Base Case” (no acid plant option).

The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves. There is no certainty that the conclusions reached in the PEA will be realized. Mineral resources that are not mineral reserves do not have demonstrated economic viability.

Project Summary

The Gunnison Copper Project is located approximately 65 miles southeast of Tucson, AZ. The project, which includes both the North Star and South Star deposits, currently has a total NI 43-101 indicated resource of 3.21 billion pounds of oxide copper (511 M tons at 0.31% at the North Star deposit) and an inferred resource of 1.26 billion pounds of oxide copper (221 M tons at 0.29%; 159 M tons at North Star and 62 M tons at South Star). These oxide resources have the potential to be mined using in-situ recovery methods. The Gunnison property also has the added benefit of being situated in a very remote location, near an existing mining operation.

The PEA was prepared under the overall supervision of Conrad Huss, P.E., with M3. Mr. Huss is a Qualified Person as defined by NI 43-101 and Mr. Huss is independent of Excelsior. Mr. Huss has reviewed and approved the technical information contained in this news release, as well as having verified all data disclosed herein.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star Deposit dated August 31, 2011, as revised October 25, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Alderon undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

November 9, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce results from the initial metallurgical tests on the 100% owned North Star Deposit of the Gunnison Copper Project, located in southern Arizona. Initial column leach tests indicated that acid consumption and copper recovery at North Star will support in-situ recovery (“ISR”) mining.

“We are very pleased that the results from the recent test work confirm our view that the recovery rate and acid consumptions are favorable for ISR mining of the North Star deposit,” says Stephen Twyerould, President and CEO of Excelsior. “These results, as well as the encouraging hydrological testing completed last month, will be used to complete our Preliminary Economic Assessment expected later this year.”

The North Star Deposit currently contains an indicated oxide copper resource of 3.21 billion pounds (511 million tons at 0.31% copper) and an additional inferred oxide copper resource of 0.88 billion pounds (159 million tons at 0.28% copper).

Metallurgical Details

The metallurgical tests involved loading 6-inch diameter clear PVC pipe with three representative samples from the North Star deposit and leaching them with a dilute sulfuric acid solution for 164 days. The three samples were from the Martin formation (Met 1: high acid consumer), Upper Abrigo (Met 2: moderate acid consumer) and Lower Abrigo (Met 3: low acid consumer). The Martin formation sample is representative of the higher acid consuming rocks that make up approximately 50% of the mineralization; whereas, the Abrigo samples are representative of the lower acid consuming rocks (making up the remaining 50% of the mineralization). Given that the copper mineralization is essentially all chrysocolla and other silicates occurring on natural fracture planes and surfaces, the core fragments of the higher acid consuming rocks were epoxy-coated to seal off any unnatural surfaces and fractures created by drilling and core handling.

The results indicate that within the fractured oxide copper zone, approximately 65% to 80% of the copper will dissolve if contacted by dilute sulfuric acid solutions at a pH of approximately 1.5. These results are consistent with typical metallurgical recoveries of copper oxide deposits in the southwestern USA and northern Mexico. These results represent metallurgical recovery and not overall copper recovery, which is expected to be in the range of 40% to 50%, as is typical of ISR-based mining operations.

Estimates for acid consumption in terms of pounds of acid consumed per pound of copper recovered (lb/lb) were also completed for the recent test work. The results for each sample are as follows; Met 1, 8.9 lb/lb; Met 2, 5.0 lb/lb; and Met 3, 3.9 lb/lb. These results were very encouraging and generally superior to historical results, further demonstrating the potential for the Gunnison Project to become a low-cost copper producer.

The results of the recent metallurgical test work will be combined with historical test work and other important data to complete a Preliminary Economic Assessment on the North Star deposit scheduled to be completed later this year.

Hazen Research, Inc. of Golden, Colorado (“Hazen”), an independent contractor, conducted the metallurgical test work. Mr. Brian Cooper, Project Manager for Hazen Research, directly supervised the testing. The results of the Hazen tests, together with the historical test work were reviewed by Dr. Terry McNulty, President of T.P. McNulty and Associates, Inc. Both Mr. Cooper and Dr. McNulty are independent of Excelsior. Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in this news release.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star Deposit dated August 31, 2011, as revised October 25, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Alderon undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

October 28, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) announces that Union Securities Ltd. (“Union Securities”) has initiated equity research coverage of Excelsior.

Union Securities’ equity research is posted on their corporate website at www.union-securities.com and can be accessed by users upon registration or by contacting Mr. Philip Ker, B.Sc. Geol., MBA, at Union Securities, via email at This email address is being protected from spambots. You need JavaScript enabled to view it..

All reports on Excelsior prepared by analysts represent the views of such analysts and are not necessarily those of Excelsior. Excelsior is not responsible for the content, accuracy or timelines of any analyst’s website.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star dated August 31, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark Morabito"
Chairman of the Board

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Alderon undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 29, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior") announces that Byron Capital Markets Ltd. ("Byron") has initiated equity research coverage of Excelsior.

Following a site visit, Merrill McHenry, mining and metals analyst for Byron, provides an overview of Excelsior and its exploration and development work at its Gunnison Copper Project located in southeastern Arizona.

Byron’s equity research is posted on their corporate website at www.byroncapitalmarkets.com and can be accessed by users upon registration.

All reports on Excelsior prepared by analysts represent the views of such analysts and are not necessarily those of Excelsior. Excelsior is not responsible for the content, accuracy or timelines of any analyst’s website.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven trak records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star dated August 31, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark Morabito"
Chairman of the Board

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Alderon undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 8, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) announces that Mackie Research Capital Corporation (“Mackie”) has initiated equity research coverage of Excelsior.

Following a site visit, Barry Allan, Vice Chair of Mackie Research’s Mining Group, provides an overview of Excelsior and its exploration and development work at its Gunnison Copper Project located in south-eastern Arizona.

Mackie’s equity research is posted on their corporate website at www.mackieresearch.com and can be accessed by users upon registration or by contacting Mr. Allan at Mackie Research, via email at This email address is being protected from spambots. You need JavaScript enabled to view it. or telephone at 416.860.7612.

All reports on Excelsior prepared by analysts represent the views of such analysts and are not necessarily those of Excelsior. Excelsior is not responsible for the content, accuracy or timelines of any analyst’s website.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star dated August 31, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Alderon undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 6, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior") is pleased to announce reuslts from two comprehensive hydrological tests conducted at the North Star Deposit. The results generated hydrological conductivities in the range expected for a fractured deposit and show the deposit is suitable for in-situ recovery (ISR). The North Star Deposit is part of the Gunnison Copper Property located within the copper porphyry belt in southern Arizona.

"We are very pleased with the results from this initial hydrological testing. We have successfully achieved another milestone in demonstrating suitable hydrological conditions for ISR at the North Star Deposit," says Stephen Twyerould, President and CEO of Excelsior. "These relults will be combined with new metallurgical data to complete a Preliminary Economic Assessment expected later this year. Further hydrological and metallurgical testing will be carried out as we continue driving our Project towards production."

The North Star Deposit currently contains an indicated oxide copper resource of 3.21 billion pounds (511 million tons at 0.31% copper) and an additional inferred oxide copper resource of 0.88 billion pounds (159 million tons at 0.28% copper). For further details on the resource estimate, please see the news release dated July 19, 2011.

Hydrology Details

Two hydrological tests were completed on holes NSH-01 and NSH-02 and included pumping and injecting water to measure groundwater parameters, extensive down hole geophysical logging, geological logging and assaying, and advanced electrical geophysics. The two new tests complement previous testing in the lat 1990's by Magma Copper Corporation (BHP-Billiton). The holes are all located in the central portion of the North Star Deposit as shown in the figure at: http://excelsiormining.com/Projects/GunnisonProject/Hydrology_Map.pdf

Hydrological conductivities ("K values") are a measure of the efficiency with which water moves through the rock and are measured as feet per day (ft/d). NSH-01 had a K value of 0.08 ft/d measued over an interval of 394 feet (from 702 feet to 1,096 feet), representing the screened interval of the hold. NSH-02 had a K value of 5.9 ft/d measured over an interval of 656 feet (from 608 feet to 1,264 feet). The average K value for the two holes is approximately 2.9 ft/d. The K values achieved are entirely consistent with K values from similar ISR projects.

Excelsior's hydrological testing was supervised by Michael W. Bostic, R.G., Principal Hydrogeologist from BasinWells Associates, PLLC and a Qualified Person as defined by NI 43-101. Mer. Bostic has reviewed and is responsible for the technical information contained in this news release with respect to Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Mer. Twyerould has reviewed and verified the data disclosed in this news release with respect to the resource estimate.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star dated August 31, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Alderon undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 1, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior") is pleased to announce that today it has filed a National Instrument (NI) 43-101 Technical Report dated August 31, 2011 on SEDAR at www.sedar.com. The Report is with respect to Excelsior's resource estimate on the North Star Deposit, announced in a July 19, 2011 press release. The Report confirms no changes in the resource estimate from the July 19th release, which stated an indicated oxide copper (Cu) resource of 3.21 billion pounds (511 million tons at 0.31% Cu) and an additional inferred resource of 0.88 billion pounds Cu (159 million tons at 0.28% Cu) for the North Star Deposit. Refer to the Report for further details on the resource estimate. The North Star Deposit is part of the Gunnison Copper Property located within the copper porphyry belt in southern Arizona.

Excelsior’s exploration work on the Gunnison Property is supervised by Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Mr. Twyerould has reviewed and approved the technical information contained in this news release.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about future exploration on and the development of the Gunnison Project and the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Alderon undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Cautionary Note Concerning Reserve and Resource Estimates
This press release uses the terms “reserves”, “resources”, “proven reserves”, “probable reserves”, “measured resources”, “indicated resources” and “inferred resources”. United States investors are advised that, while such terms are recognized and required by Canadian securities laws, the United States Securities and Exchange Commission (the “SEC”) does not recognize them. Under United States standards, mineralization may not be classified as a “reserve” unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve determination is made. Mineral resources that are not mineral reserves do not have demonstrated economic viability. United States investors are cautioned not to assume that all or any part of measured or indicated resources will ever be converted into reserves. Inferred Resources are in addition to Measured and Indicated Resources. Further, inferred resources have a great amount of uncertainty as to their existence and as to whether they can be mined legally or economically. It cannot be assumed that all or any part of the inferred resources will ever be upgraded to a higher category. Therefore, United States investors are also cautioned not to assume that all or any part of the inferred resources exist, or that they can be mined legally or economically. Disclosure of “contained ounces” is permitted disclosure under Canadian regulations, however, the SEC normally only permits issuers to report “resources” as in place tonnage and grade without reference to unit measures. Accordingly, information concerning descriptions of mineralization and resources contained in this release may not be comparable to information made public by United States companies subject to the reporting and disclosure requirements of the SEC.

National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) is a rule developed by the Canadian Securities Administrators, which established standards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. Unless otherwise indicated, all reserve and resource estimates referred to in this press release or released by the Company in the future have been or will be prepared in accordance with NI 43-101 and the Canadian Institute of Mining, Metallurgy and Petroleum Classification System. The requirements of NI 43-101 are not the same as those of the SEC and any reserves reported by the Company in compliance with NI 43-101 may not qualify as reserves under the SEC’s standards.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Excelsior Mining Corp. (TSX-V: MIN) (OTCQX: EXMGF) (Frankfurt: 3XS) ("Excelsior") is pleased to announce that the initial hydrological and metallurgical tests on the Gunnison Copper Property are complete. Results are being compiled and will be released within the next several weeks once they are finalized. The Gunnison Property is located within the copper porphyry belt in southern Arizona.

“We look forward to releasing these results in September as they are crucial in developing this deposit as an ISR (in-situ recovery) project," says Stephen Twyerould, President and CEO of Excelsior. “These results will be used to complete a Preliminary Economic Assessment expected later this year.”

The hydrological program consisted of drilling two holes within the North Star deposit and included pumping and injecting water to determine the permeability of the mineralization. This new data will supplement the two historical hydrological holes drilled by Magma Copper Corporation in the mid 1990’s that demonstrated Gunnison can be mined using ISR techniques.

The metallurgical program consisted of sending samples from two drill holes to Hazen Laboratory in Denver, Colorado for column leach testing. The column leach tests will greatly improve the current understanding of in-situ copper extraction on the Gunnison Property.

Excelsior’s exploration work on the Gunnison Property is supervised by Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Mr. Twyerould has reviewed and is responsible for the technical information contained in this news release.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star and South Star Deposits dated June 2010.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the completion of a Preliminary Economic Assessment and the potential to use in-situ recovery methods on the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

July 7, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce the final assay results from the 33,792 foot (10,300 meter) drill program on the Gunnison Copper Property located within the copper porphyry belt in southern Arizona. Highlights include:

Drill Hole From (feet) To (feet) Length (feet) Total Copper %
NSD – 14 402 1070 668 0.31
NSD – 15 410 1100 690 0.20
NSD – 16 880 1270 390 0.41
NSD – 17 800 1070 270 0.22

“The assay results from our drill program have come back largely as expected,” says Stephen Twyerould, President and CEO of Excelsior. “This gives us great confidence in predicting that we will be able to move the majority of our current inferred copper resource into the indicated category. Investors can look forward to seeing the results of the updated resource estimate within the next few weeks.”

Complete assay highlights with drill plan map are posted on the Excelsior website at:http://excelsiormining.com/e/gunnison.php. Gunnison currently contains a National Instrument (NI) Gunnison currently contains a National Instrument (NI) 43-101 compliant inferred resource of 4.77 billion pounds of copper (787 million tons at 0.30% copper) which remains open for expansion (see news release dated November 2, 2010). An upgraded resource estimate is expected during the third quarter of 2011.

All samples are prepared from manually split half-core sections on site in Arizona. Split drill core samples are then sent to Skyline Assayers & Laboratories in Tucson, Arizona for Total Copper and Sequential Copper analyses. Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program.

Excelsior’s exploration work on the Gunnison Property is supervised by Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Mr. Twyerould has reviewed and is responsible for the technical information contained in this news release. Mr. Twyerould has verified the data disclosed in this news release, including sampling, analytical and test data underlying the information disclosed in this news release. Mr. Twyerould has verified that the results were accurate from the official assay certificates provided to Excelsior.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star and South Star Deposits dated June 2010.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Renmark Financial Communications Inc.
Barry Mire: This email address is being protected from spambots. You need JavaScript enabled to view it.
Lyane Bourassa: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tel.: (514) 939-3989 or (416) 644-2020
www.renmarkfinancial.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

May 25, 2011

Excelsior Mining Corp. (TSX-V: MIN) (OTCQX: EXMGF) (Frankfurt: 3XS) (“Excelsior”) is pleased to announce the commencement of the initial hydrological test work on the Gunnison Copper Property located within the copper porphyry belt in southern Arizona. The program has been designed to determine the permeability of the mineralization and to confirm previous results that demonstrate that Gunnison can be mined using in-situ recovery (ISR) techniques.

The hydrological program will consist of drilling two holes up to 1200 feet deep within the North Star deposit to supplement the two historical hydrological holes drilled by Magma Copper Corporation in the mid 1990’s that gave encouraging results. This program will take several weeks to complete and will include geophysical logging, pump testing, water sampling and other tests to determine permeability and flow rates. This data will be combined with new metallurgical data (expected in late July) and the results from recent drilling to complete a Preliminary Economic Assessment expected in the third quarter of 2011.

“Hydrology is a key component of ISR,” says Stephen Twyerould, President and CEO of Excelsior. “We look forward to the results of this program and being able to show the investment community that ISR is a viable process.”

Gunnison currently contains a National Instrument (NI) 43-101 compliant inferred resource of 4.77 billion pounds of copper (787 million tons at 0.30% copper) which remains open for expansion (see news release dated November 2, 2010). An upgraded resource estimate is expected at the end of the second quarter of 2011.

Excelsior’s exploration work on the Gunnison Property is supervised by Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Mr. Twyerould has reviewed and is responsible for the technical information contained in this news release.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star and South Star Deposits dated June 2010.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Renmark Financial Communications Inc.
Barry Mire: This email address is being protected from spambots. You need JavaScript enabled to view it.
Lyane Bourassa: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tel.: (514) 939-3989 or (416) 644-2020
www.renmarkfinancial.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

May 24, 2011

Excelsior Mining Corp. (TSX.V: MIN) (OTCQX: EXMGF) (“Excelsior”) is pleased to announce that it has today commenced trading on the OTC Market’s prestigious tier, OTCQX International, under the symbol of EXMGF. Investors can find current financial disclosure and Real-Time Level 2 quotes for Excelsior on www.otcqx.com and www.otcmarkets.com.

About OTCQX

The OTCQX Marketplace is the premier tier of the U.S. OTC market. Investor-focused companies use the quality-controlled OTCQX platform to offer investors transparent trading, superior information, and easy access through their regulated U.S. broker-dealers. The innovative OTCQX platform offers companies and their shareholders a level of marketplace services formerly available only on a U.S. stock exchange. Several large international companies are quoted on the OTCQX including Adidas, Air France, Gazprom Neft, Repsol and Deutsche Telekom. For more information and to view a full list of OTCQX companies, visit www.otcqx.com.

About OTC Markets Group Inc.

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About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Renmark Financial Communications Inc.
Barry Mire: This email address is being protected from spambots. You need JavaScript enabled to view it.
Lyane Bourassa: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tel.: (514) 939-3989 or (416) 644-2020
www.renmarkfinancial.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

May 17, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (“Excelsior”) is pleased to announce additional assay results from the drill program on the Gunnison Copper Property located within the copper porphyry belt in southern Arizona. Highlights include:

Drill Hole From (feet) To (feet) Length (feet) Total Copper %
NSD – 13 790.0 1590.0 800.0 0.34
including 790.0 1360.0 570.0 0.42
NSD – 10 561.5 1390.0 828.5 0.38
NSD – 05 674.5 1130.0 455.5 0.38
NSD – 02 605.0 1550.0 945.0 0.27

Note: Holes not drilled in sequence.

“These latest assay results continue to demonstrate long intervals of highly-fractured mineralized core of ample grade,” says Stephen Twyerould, President and CEO of Excelsior. “With the drilling now completed, we remain confident that the objectives of this program will be met and that we will be able to move the majority of our current copper resource from the inferred to the indicated category."

Complete assay highlights with drill plan map are posted on the Excelsior website at:http://excelsiormining.com/e/gunnison.php. The drill program is now completed with a total of 33,792 feet of drilling in 20 holes. Gunnison currently contains a National Instrument (NI) 43-101 compliant inferred resource of 4.77 billion pounds of copper (787 million tons at 0.30% copper) which remains open for expansion (see news release dated November 2, 2010). An upgraded resource estimate is expected at the end of the second quarter of 2011.

All samples are prepared from manually split half-core sections on site in Arizona. Split drill core samples are then sent to Skyline Assayers & Laboratories in Tucson, Arizona for Total Copper and Sequential Copper analyses. Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program.

Excelsior's exploration work on the Gunnison Property is supervised by Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Mr. Twyerould has reviewed and is responsible for the technical information contained in this news release. Mr. Twyerould has verified the data disclosed in this news release, including sampling, analytical and test data underlying the information disclosed in this news release. Mr. Twyerould has verified that the results were accurate from the official assay certificates provided to Excelsior.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: Gunnison Copper Project, Cochise County, Arizona, USA, Mineral Resource of the North Star and South Star Deposits dated June 2010.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Renmark Financial Communications Inc.
Barry Mire: This email address is being protected from spambots. You need JavaScript enabled to view it.
Lyane Bourassa: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tel.: (514) 939-3989 or (416) 644-2020
www.renmarkfinancial.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

May 4, 2011

Excelsior Mining Corp. (TSX.V: MIN) (“Excelsior”) announces the appointment of JJ Jennex as Vice President, Corporate Affairs. Mr. Jennex will be responsible for all aspects of corporate communications with shareholders, media and all potential investors. Mr. Jennex has been active in both the junior resource industry and the international real estate sector for more than 12 years. During this time he has held numerous positions with both private and publically listed companies.

"Mr. Jennex is a great addition to Excelsior's team," said Mr. Twyerould, President of Excelsior. "His extensive experience in financial and public markets will be of great value in increasing our company's exposure to both retail and institutional investors."

Mr. Jennex holds 35,667 common shares, 8,367 warrants and 216,000 stock options in Excelsior.

Excelsior is also pleased to announce that it has retained the services of Renmark Financial Communications Inc. (“Renmark”) to handle its investor relations activities.
"We are pleased to announce that we have selected Renmark to reinforce Excelsior's profile in the financial community and enhance the visibility of our project portfolio. We chose Renmark because its standards and methodologies fit best with the message we wish to communicate to the investing public," noted Stephen Twyerould, President and CEO of Excelsior.

Renmark is a privately held company, based in Montreal, Quebec, and provides financial services, investor relations and other marketing services to public companies. Renmark does not have any interest, directly or indirectly, in Excelsior or its securities, or any right or intent to acquire such an interest. Renmark will provide investor relations services including, but not limited to, communicating with investors and potential investors.

In consideration of the services to be provided, Excelsior has agreed to a 12-month agreement starting May 1st, 2011, to pay a monthly retainer of $3,000 a month to Renmark. The agreement is subject to regulatory approval.

Excelsior also announces that it has retained New York based O&M Partners LLC ("O&M") to target potential institutional and independent money managers for a period of twelve months. Services offered to the Company include initiating contacts and meetings with institutional investors, independent money managers and market makers. Terms of the engagement are restricted to a payment per full day for in person meetings. It is at Excelsior’s discretion on how frequently O&M’s services will be utilized. Excelsior has also granted O&M 200,000 incentive stock options exercisable for a five year term. The options vest quarterly and are exercisable at a price of $0.60 per share. The agreement is subject to regulatory approval.

O&M is a buy side consulting firm specializing in the resource sector. They have been introducing small cap equities to the institutional investment community across the United States and in select European and U.K. markets since 1995. For the past eight years, O&M has been a leading agent in introducing senior management of mining companies to both specialist and generalist institutional investors.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Renmark Financial Communications Inc.
Barry Mire: This email address is being protected from spambots. You need JavaScript enabled to view it.
Lyane Bourassa: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tel.: (514) 939-3989 or (416) 644-2020
www.renmarkfinancial.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

April 19, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (“Excelsior”) is pleased to announce assay results from the ongoing drill program on the Gunnison Copper Property located within the copper porphyry belt in southern Arizona. Highlights include:

Drill Hole From (feet) To (feet) Length (feet) Total Copper %
NSD – 08 630.0 1740.0 1110.0 0.39
NSD – 07 816.0 1260.0 444.0 0.22
and 1439.0 1800.0 361.0 0.24
NSD – 06 820.0 1685.4 865.4 0.27

“It’s great to see consistent thickness and grade at Gunnison as we continue our drilling with the goal of upgrading the majority of the resource from inferred to indicated”, says Stephen Twyerould, President and CEO of Excelsior. “We are approximately 90% through our drill program and the core continues to be highly fractured and well mineralized, which is key for developing this as an in-situ copper recovery project.”

To date, a total of 8,340 meters (27,350 feet) have been drilled in 2011 out of a planned 10,000 meters (32,000 feet). Complete assay highlights with drill plan map are posted on the Excelsior website at: http://excelsiormining.com/e/gunnison.php. The drill program will be followed up with an upgraded resource estimate expected in the second quarter of 2011.

Gunnison currently contains a National Instrument (NI) 43-101 inferred resource of 4.77 billion pounds of copper (787 million tons at 0.30% copper) which remains open for expansion (see news release dated November 2, 2010). These three holes continue to demonstrate the continuity of the deposit and aid in defining the eastern extent of the copper mineralization.

Over two-thirds of the copper contained in the NI 43-101 resource occurs as oxide copper, which has the potential to be mined using in-situ recovery (ISR) methods. The fractured nature of the deposit allows for fluid to move through and extract the copper before being pumped back up to the surface. For further details on the ISR process and its advantages, please visit: http://excelsiormining.com/e/in-siturecovery.php

All samples are prepared from manually split half-core sections on site in Arizona. Split drill core samples are then sent to Skyline Assayers & Laboratories in Tucson, Arizona for Total Copper and Sequential Copper analyses. Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program.

Excelsior’s exploration work on the Gunnison Property is supervised by Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Mr. Twyerould has reviewed and is responsible for the technical information contained in this news release. Mr. Twyerould has verified the data disclosed in this news release, including sampling, analytical and test data underlying the information disclosed in this news release. Mr. Twyerould has verified that the results were accurate from the official assay certificates provided to Excelsior.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the timing for the upgraded resource estimate, expansion of the resource estimate, the potential to use in-situ recovery methods and the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forwardlooking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

March 22, 2011

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (“Excelsior”) is pleased to announce the first set of assay results from the Gunnison Copper Property located within the copper porphyry belt in southern Arizona. The 2011 Phase I program consists of 10,000 meters (32,800 feet) of drilling and preliminary hydrological and metallurgical tests.

Highlights from the first three holes include:

Drill Hole From (feet) To (feet) Length (feet) Total Copper %
NSD – 1 530.0 1490.0 960.0 0.45
including 530.0 932.5 402.5 0.59
NSD – 3 563.0 1543.6 980.6 0.28
including 1360.0 1543.6 183.6 0.44
NSD – 12 422.0 900.0 478.0 0.27
including 422.0 744.5 322.5 0.35

Please note that the holes were not drilled in sequence.

Gunnison contains a National Instrument (NI) 43-101 inferred resource of 4.77 billion pounds of copper (787 million tons at 0.30% copper) which remains open for expansion (see news release dated November 2, 2010). The first three holes continue to demonstrate the continuity in terms of thickness and grade of the deposit and are expected to be used in upgrading the resource from the inferred to the indicated category. NSD-01 and NSD-03 also help define the western extent of the copper mineralization.

http excelsiormining
Photo: Core from NSD-1: 902 feet to 918 feet

“We are excited to have started this drill program with such great results, “says Stephen Twyerould, President and CEO of Excelsior. “Not only are the grades and thickness as we expected or better, but the core is very nicely fractured, which is key for developing this as an in-situ copper recovery project.”
Over two-thirds of the copper contained in the NI 43-101 resource occurs as oxide copper, which has the potential to be mined using in-situ recovery (ISR) methods. The fractured nature of the deposit (see photo on left) allows for fluid to move through and extract the copper before being pumped back up to the surface. For further details on the ISR process and its advantages, please visit:http://www.excelsiormining.com/index.php/investors/in-situ-recovery

Complete assay highlights with drill plan map are posted on the Excelsior website at:http://www.excelsiormining.com/index.php/gunnison-project5

All samples are prepared from manually split half-core sections on site in Arizona. Split drill core samples are then sent to Skyline Assayers & Laboratories in Tucson, Arizona for Total Copper and Sequential Copper analyses. Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program.

Excelsior’s exploration work on the Gunnison Property is supervised by Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior and a Qualified Person as defined by NI 43-101. Mr. Twyerould has reviewed and is responsible for the technical information contained in this news release.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

NOT FOR DISSEMINATION IN THE UNITED STATES OR FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Transaction and final Exchange approval are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

March 10, 2011

Excelsior Mining Corp. (TSX-V: MIN) (“Excelsior”) reports that it has signed a six-month Consulting Agreement with Milestone Media AG ("Milestone") to act as Investor Relations consultants to Excelsior.

Milestone is a privately held company, based in Zug, Switzerland, and provides financial services, investor relations and other marketing services to public companies. Milestone and Excelsior are at arms-length to one another. Except for the option grant noted below, Milestone does not hold or have the right to acquire an interest, directly or indirectly in Excelsior. Milestone will provide investor relations services including, but not limited to, communicating with investors and potential investors based in Europe. Milestone will not provide market making services.

Milestone will be paid a monthly fee of $6,000 per month and Excelsior has granted 250,000 stock options to Milestone at an exercise price of $0.71 per share. These options are granted for a fiveyear period, and the grant is subject to vesting provisions in accordance with the rules of the TSX Venture Exchange. Excelsior may, in its sole discretion, extend the Consulting Agreement beyond the initial six month term.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Transaction and final Exchange approval are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

 

March 1, 2011

Excelsior Mining Corp. (TSX-V: MIN) (“Excelsior”) is pleased to announce that it has closed its previously announced non-brokered private placement offering (the “Offering”) of units of Excelsior ("Units"). Specifically, Excelsior raised aggregate gross proceeds of approximately $8,000,000, through the issuance of 13,333,333 Units at a price of $0.60 per Unit. Each Unit consists of one common share and one half of one common share purchase warrant (each whole warrant a “Warrant”). Each Warrant shall be exercisable to acquire one common share at an exercise price equal to $1.00 until February 28, 2013.

At any time after June 29, 2011, if the volume weighted average trading price of the common shares of Excelsior on the TSX Venture Exchange is greater than $1.50 per share for 30 consecutive trading days, Excelsior may give written notice to warrantholders that the Warrants will expire 30 calendar days after the date of such notice.

The Company intends to use the net proceeds of the Offering to continue to advance its Gunnison Copper Project and for general corporate and working capital purposes.

Excelsior paid finder's fee on certain subscriptions equal to 7% of the gross proceeds received from such subscriptions. Excelsior also issued 644,606 non-transferrable finder’s warrants ("Finder's Warrants"). Each Finder's Warrant may be exercised for one common share of Excelsior at an exercise price of $1.00 per Finder's Warrant until February 28, 2013.

All securities issued in the Offering are subject to a statutory four month hold period expiring on June 29, 2011.

The securities being offered hereby have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state or province in which such offer, solicitation or sale would be unlawful.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Chairman

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Offering, the use of proceeds from the Offering and the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 18, 2011

Excelsior Mining Corp. (TSX-V: MIN) (“Excelsior”) is pleased to announce that it has increased the size of its previously announced non-brokered private placement offering (the “Offering”) of units of Excelsior ("Units") (see News Release dated February 16, 2011). Specifically, Excelsior now expects to raise aggregate gross proceeds of up to $8,000,000, through the issuance of up to 13,333,333 Units at a price of $0.60 per Unit. Each Unit will consist of one common share and one half of one common share purchase warrant (each whole warrant a “Warrant”). Each Warrant shall be exercisable to acquire one common share for a period of 24 months at an exercise price equal to $1.00.

At any time after four months and one day from the date of the closing of the Offering, if the volume weighted average trading price of the common shares of Excelsior on the TSX Venture Exchange is greater than $1.50 per share for 30 consecutive trading days, Excelsior may give written notice to warrantholders that the Warrants will expire 30 calendar days after the date of such notice.

The Company intends to use the net proceeds of the Offering to continue to advance its Gunnison Copper Project and for general corporate and working capital purposes.

The Offering will be non-brokered; however, Excelsior will pay finder’s fees in accordance with the rules and policies of the TSX Venture Exchange. The Offering is subject to the approval of the TSX Venture Exchange.

The securities being offered hereby have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state or province in which such offer, solicitation or sale would be unlawful.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Chairman

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Offering, the use of proceeds from the Offering and the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 16, 2011

Excelsior Mining Corp. (TSX-V: MIN) (“Excelsior”) is pleased to announce that it intends to undertake a non-brokered private placement to raise up to a total of $7,000,000 through the issuance of 11,666,666 units of Excelsior (the “Units”) at a price of $0.60 per Unit (the “Offering”). Each Unit will consist of one common share and one half of one common share purchase warrant (each whole warrant a “Warrant”). Each Warrant shall be exercisable to acquire one common share for a period of 24 months at an exercise price equal to $1.00.

At any time after four months and one day from the date of the closing of the Offering, if the volume weighted average trading price of the common shares of Excelsior on the TSX Venture Exchange is greater than $1.50 per share for 30 consecutive trading days, Excelsior may give written notice to warrantholders that the Warrants will expire 30 calendar days after the date of such notice.

The Company intends to use the net proceeds of the Offering to continue to advance its Gunnison Copper Project and for general corporate and working capital purposes.

The Offering will be non-brokered; however, Excelsior will pay finder’s fees in accordance with the rules and policies of the TSX Venture Exchange. The Offering is subject to the approval of the TSX Venture Exchange.

The securities being offered hereby have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state or province in which such offer, solicitation or sale would be unlawful.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Chairman

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Offering, the use of proceeds from the Offering and the production potential of the Gunnison Copper Project are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 2, 2011

Excelsior Mining Corp. (TSX-V: MIN) (“Excelsior”) is pleased to announce that a metallurgical program has commenced on the Gunnison Copper Project located within the copper porphyry belt in southeastern Arizona.

Samples from two recently drilled metallurgical holes have been shipped to Hazen Laboratory in Denver, Colorado for column leach testing. Preliminary results are expected in the middle of the second quarter of 2011. The column leach tests will greatly improve the current understanding of in-situ copper extraction on the Gunnison Copper Project. Excelsior’s metallurgical program will build upon prior work completed by Magma Copper Corporation (“Magma”). Magma drilled eight holes and completed several comprehensive metallurgical tests and hydrological studies. The Magma tests indicated acid consumption and copper recovery were favourable for in-situ mining on the Gunnison Project.

“Previous testing was very encouraging and has warranted continued examination,” says Stephen Twyerould, President & CEO of Excelsior. “We are excited to have commenced this next phase of our work program and look forward to the results in a few months.”

The metallurgical program will be complimented by a hydrological program, which is expected to commence by the beginning of the second quarter of 2011. Management is expecting the two programs will confirm previous results that demonstrate the Gunnison Project can be mined using in-situ recovery methods.

The metallurgical program is being supervised by Dr. Aberra Getahun, Ph.D., General Manager Production and Permitting for Excelsior. Dr. Getahun has 25 years of experience in hydrogeology, in-situ solution mining, and acid generating and neutralizing capacity. Dr. Getahun holds a Ph.D. in Aqueous Geochemistry from the University of Oregon.

Stephen Twyerould, (Fellow of AUSIMM), President and CEO of Excelsior and a Qualified Person as defined by National Instrument 43-101, has reviewed and is responsible for the technical information contained in this news release.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

NOT FOR DISSEMINATION IN THE UNITED STATES OR FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Transaction and final Exchange approval are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 13, 2011

Excelsior Mining Corp. (TSX-V: MIN) (“Excelsior”) is pleased to announce the appointment of Mr. Aberra Getahun, Ph.D., as General Manager Production and Permitting. Dr. Getahun has 25 years of experience involving fluid-rock interaction and metal transportation. His focus has been on hydrogeology, in-situ solution mining, environmental impact assessment, acid generating and neutralizing capacity, and permitting. Dr. Getahun holds a Ph.D. in Aqueous Geochemistry from the University of Oregon.

Dr. Getahun has been involved in a variety of projects internationally and has worked on the Florence Copper Project located approximately 100 miles from Excelsior’s Gunnison Copper Project. Florence is now being developed by Curis Resources Ltd as an in-situ recovery (ISR) project. Dr. Getahun developed and explored various geochemical models for copper leaching and extraction for an in-situ mining program. As two-thirds of the copper at Gunnison occurs as oxide copper, it also has the potential to be mined using ISR methods.

“We are very pleased that Aberra has joined our team,” says Stephen Twyerould, President & CEO of Excelsior. “His academic and professional experience will be invaluable in taking our Gunnison Copper Project through the development phase and into production.”

Excelsior is granting to Dr. Getahun, under the terms of its amended stock option plan, options to purchase up to 200,000 common shares at a price of CDN $0.60 per share. The options are subject to vesting over a one year period and have a five year term.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

NOT FOR DISSEMINATION IN THE UNITED STATES OR FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Transaction and final Exchange approval are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 12, 2011

Excelsior Mining Corp. (TSX-V: MIN) (“Excelsior”) is pleased to announce that drilling has commenced at the Gunnison Copper Property located within the copper porphyry belt in southern Arizona. The 2011 Phase I program will consist of 10,000 meters (m) of drilling and preliminary hydrological and metallurgical tests.

Gunnison contains a National Instrument (NI) 43-101 inferred resource of 4.77 billion pounds of copper (787 million tons at 0.30% copper) which remains open for expansion (see news release dated November 2, 2010). Approximately 7,000 m of drilling will be targeted towards upgrading the resource from the inferred to the indicated category. Management expects that the majority of the oxide resource will be upgraded. The remaining 3,000 m of drilling will test exploration targets, with the goal of increasing the global copper resource. An updated resource estimate will be carried out following the completion of this drill program.

Over two-thirds of the copper occurs as oxide copper, which has the potential to be mined using insitu recovery (ISR) methods. ISR is a low cost, environmentally sound process of extracting metals from deposits and has been commercially used in Arizona to extract copper. Hydrological and metallurgical test work will commence later this quarter in order to confirm previous results that demonstrate that Gunnison can be mined using ISR.

Additional information and maps showing drill hole locations, as well as the NI 43-101 Technical Report, can be found on Excelsior’s website at: www.excelsiormining.com.

Stephen Twyerould, (Fellow of AUSIMM), President and CEO of Excelsior and a Qualified Person as defined by National Instrument 43-101, has reviewed and is responsible for the technical information contained in this news release.

About Excelsior

Excelsior is an exploration and development company with a copper project located within the copper porphyry belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and with its in-situ recovery potential, is intended for near-term production. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found on Excelsior’s website at: http://www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

T: 604-681-8030
F: 604-681-8039
www.excelsiormining.com

NOT FOR DISSEMINATION IN THE U.S. OR FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES

Information set forth in this news release may involve forward-looking statements under applicable securities laws. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation; statements about the terms of the Transaction and final Exchange approval are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

October 31, 2013

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the“Company”) announces that it will re-price 5,147,333 incentive stock options issued to directors, officers, employees and consultants of the Company. The options were originally granted between October 2010 and February 2012 at prices ranging from $0.50 to $0.73. The new exercise price for these options will be $0.30 per share. The re-pricing of the options is subject to the approval of the TSX Venture Exchange and no options may be exercised at the new price until such approval is obtained. In addition, as required by TSX Venture Exchange policies, the re-pricing of any options held by insiders is subject to disinterested shareholder approval. The Company intends to seek such disinterested shareholder approval at the Company's 2014 annual general meeting of shareholders and insiders may not exercise options at the new price until such approval is obtained.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

ON BEHALF OF THE EXCELSIOR BOARD 

"Stephen Twyerould"

President & CEO 

For further information regarding this press release, please contact:

Excelsior Mining Corp.

Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs

T: 604-681-8030 x240

E: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

www.excelsiormining.com

 

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation, statements about the advancement of the Company’s mineral properties and disinterested shareholder approval for the repriced options being sought at the 2014 annual general meeting of shareholders are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulators. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 10, 2013

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce an update on the Company’s prefeasibility study as well as all the results from the most recent metallurgical test program from its North Star deposit, part of Excelsior’s Gunnison Copper project, located in southeastern Arizona.

Prefeasibility Study Update

The Company has engaged M3 Engineering & Technology Corporation (“M3”) of Tucson, Arizona to support the Company in the completion of a prefeasibility study on the Gunnison Copper project. M3 is a global full-service engineering design firm that provides expertise in engineering and construction management services. The firm has a long history of supporting base metal mining projects.

“M3’s professionalism and direct experience with in-situ copper recovery projects, including our Gunnison project, makes them the best choice to help Excelsior complete the prefeasibility study; we look forward to releasing the results later this year,” said Stephen Twyerould, President and CEO of Excelsior Mining.

Metallurgy Test Results at Gunnison Continue to Validate In-Situ Recovery Potential
 
A total of 13 submerged leach tests have been completed and the final results are presented in the table below. Previously, the Company released the results from five tests from the Lower Abrigo rock formation (see February 14, 2013 news release); these test results have been updated. In general, higher acid concentrations generated faster recovery rates while longer leach times generated higher total recoveries.
 
“Once again we have procured technical results that underscore the viability of in-situ recovery at Gunnison,” stated Stephen Twyerould. “These metallurgical results, when combined with previous results, will be used for the preparation of a prefeasibility study.”
 
Submerged leach tests details
Submerged leach testing employs a protocol similar to column leach testing, but modified to more closely reflect conditions during in-situ leaching. These tests were designed to be repeatable, and to evaluate the response of mineralization to in-situ leaching at different flow rates and acid concentrations.
 
The assay procedure for determining “acid soluble copper” does not typically include copper present in the form of secondary copper sulfides which are soluble under typical leaching conditions, including submerged leach tests.  Should the ore being tested contain some copper as secondary copper sulfides, this copper will solubilize and as a consequent the calculated acid soluble copper recovery may exceed 100 percent.  This is the case in samples from the Abrigo formation.  Based on the sequential head assays, and given sufficient time and acid concentration, it can be expected that copper recoveries could reach 105% to 115% of the acid soluble copper content for the Abrigo Formation and 100% for the Martin Formation.

The submerged leach tests were conducted by the independent laboratory, SGS Metcon of Tucson, Arizona under the supervision of Dr. Ronald J. Roman, an independent consultant who is a Qualified Person as defined by NI 43-101. Dr. Roman has reviewed and approved the technical information disclosed in this news release. Dr. Roman has verified the data underlying the test results by designing the test procedure, supervising the test work, obtaining all the analytical data over the life of the experiment and performing the calculations presented below.

 
Table 1 - Results from submerged leach tests

Head Grade1 %
Column
Flow Rate2(l/h/m2)
Acid Content3
(g/l acid)
DaysLeached4
Estimated Recovery %
Adjusted AcidConsumption5
lb/lb Cu
Cu (total)
Cu
(AS)
SI
Cu
(total)
Cu
(AS)
Martin Formation
1.22
0.83
0.68
1
22
10
179
61
89
10.1
2
22
5 then 15 then to 20
179
70
98
13.0
3
11
5 then 10
179
60
88
10.0
Upper / Middle Abrigo Formation
0.78
0.61
0.78
4
22
15
119
80
102
7.1
5
37
10
119
76
98
5.7
6
22
10
119
74
95
6.0
7
22
5
119
63
80
4.7
8
11
5 then 10
179
68
99
6.5
Lower Abrigo Formation
0.30
0.19
0.62
9
22
15
99
70
112
9.5
10
37
10
76
68
109
6.3
11
22
10
81
66
106
8.6
12
22
5
99
57
92
4.8
13
11
5
99
61
98
6.3
  1. Calculated head grade: Cu (total) = total copper, Cu (AS) = acid soluble copper, SI = solubility index Cu (AS) / Cu (total)
  2. Flow rate: litres per hour of leach solution applied per cross-sectional square metre
  3. Acid Content: acid concentration of the leach solution in grams per litre of free acid
  4. Days leached includes periods of post leach rinsing
  5. Adjusted Acid Consumption: test acid consumption in pounds of acid consumed per pound of copper recovered adjusted by a factor of 0.5 to compensate for overestimation due to the test protocol

The recovery/time curves for each formation can be found on the Excelsior website at: http://www.excelsiormining.com/index.php/projects

 RecoveryTimeCurve1  RecoveryTimeCurve2  RecoveryTimeCurve3


Due to the nature of the copper oxide mineralization at North Star, combined with standard metallurgical testing procedures on drill core, more of the un-mineralized rock known as “gangue” is inadvertently exposed to the acid solution than would be expected during normal in-situ mining conditions. This overexposure results in inflated acid consumption rates from metallurgical testing compared to those expected during actual in-situ operational conditions. Previous acid consumption tests described in Excelsior’s February 14, 2013 news release indicated over estimation is in the order of 40% to 80%.  As such, acid consumption numbers presented in the table above represent test acid consumption numbers multiplied by a factor of 0.5.

Further information concerning these metallurgical tests can be found on the Excelsior website at: http://excelsiormining.com/index.php/projects.

Project Summary
The Gunnison Copper Project is located in a remote section of Cochise County in southeastern Arizona. The focus of the project is the North Star deposit, which currently has a total Measured and Indicated mineral resource of 3.21 billion pounds of oxide copper (498 M tons at 0.32%) and an Inferred mineral resource of 0.83 billion pounds of oxide copper (156 M tons at 0.27%). This oxide mineral resource has the potential to be mined using in-situ recovery methods. Mineral resources which are not mineral reserves do not have demonstrated economic viability.
 
About Excelsior 
Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in the “Project Summary” and “About Excelsior” sections of this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.  

 
ON BEHALF OF THE EXCELSIOR BOARD
 
"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

 
Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.
 
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com
 
Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of inferred and indicated mineral resources; (ii) the future implications of the metallurgical test results; (iii) production from the Gunnison Project; (iv) the completion of a pre-feasibility study; (v) expected acid consumption rates and; (vi) the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators. 

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

August 27, 2013 

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”)  announces the approval by its board of directors of an advance notice policy (the “Policy”), which, among other things, includes a provision that requires advance notice to the Company in circumstances where nominations of persons for election to the board of directors are made by shareholders of the Company other than pursuant to: (i) a “proposal” made in accordance with Division 7 of the Business Corporations Act (British Columbia) (the “Act”); or (ii) a requisition of the shareholders made in accordance with section 167 of the Act.

Among other things, the Policy fixes a deadline by which holders of record of common shares of Excelsior must submit director nominations to the Corporate Secretary of the Company prior to any annual or special meeting of shareholders at which directors are to be elected, and sets forth the specific information that a shareholder must include in the written notice to the Corporate Secretary of the Company for an effective nomination to occur. No person will be eligible for election as a director of the Company unless nominated in accordance with the provisions of the Policy.

In the case of an annual meeting of shareholders, notice to the Company must be made not less than 30 nor more than 65 days prior to the date of the annual meeting; provided, however, that in the event that the annual meeting is to be held on a date that is less than 40 days after the date on which the first public announcement of the date of the annual meeting was made, notice may be made not later than the close of business on the 10th day following such public announcement.

In the case of a special meeting of shareholders (which is not also an annual meeting), notice to the Company must be made not later than the close of business on the 15th day following the day on which the first public announcement of the date of the special meeting was made.

The Policy is effective and in full force and effect as of the date it was approved by the Company’s board of directors.  In accordance with the terms of the Policy, the Policy will be put to shareholders of the Company for approval at the next Annual General Meeting (“AGM”) which is scheduled for September 26, 2013, and if the Policy is not confirmed at the meeting by ordinary resolution of the shareholders, the Policy will terminate and be of no further force and effect following the termination of the AGM.

The full text of the Policy is available via SEDAR at www.sedar.com

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


 

Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward-looking statements are statements that relate to future, not past, events. In this context, forward-looking statements often address expected future business and financial performance, and often contain words such as "anticipate", "believe", "plan", "estimate", "expect", and "intend", statements that an action or event "may", "might", "could", "should", or "will" be taken or occur, or other similar expressions. All statements, other than statements of historical fact, included herein including, without limitation, statements about the advancement of the Company’s mineral properties are forward-looking statements. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance or achievements, or other future events, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others, the following risks: the need for additional financing; operational risks associated with mineral exploration; fluctuations in commodity prices; title matters; environmental liability claims and insurance; reliance on key personnel; the potential for conflicts of interest among certain officers, directors or promoters with certain other projects; the absence of dividends; competition; dilution; the volatility of our common share price and volume and the additional risks identified in the management discussion and analysis section of our interim and most recent annual financial statement or other reports and filings with the TSX Venture Exchange and applicable Canadian securities regulations. Forward-looking statements are made based on management's beliefs, estimates and opinions on the date that statements are made and Excelsior undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change, except as required by applicable securities laws. Investors are cautioned against attributing undue certainty to forward-looking statements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

August 1, 2013

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that it has closed its previously announced Share Purchase and Royalty Option Agreement (the “Agreement”) with Callinan Royalties Corporation (“Callinan”).

Excelsior has raised gross proceeds of $1.0 million through the issuance of 6,250,000 common shares at a price of $0.16 per common share. Concurrently, Excelsior has raised $2.0 million through the sale of a 0.5% gross revenue royalty (“GRR”) on the Gunnison Project.

Callinan now retains the option to invest up to an additional $19.0 million into Excelsior in exchange for a further 2.5% GRR on the Gunnison Project based on development milestones (1.5%) and a construction option (1%).

For the details of this transaction, please refer to news release dated July 23, 2013
 (http://www.excelsiormining.com/index.php/news/news-2013).

Proceeds from the transaction will be used by the Company for general and working capital purposes to advance the Gunnison Project.

Commenting on the close of the transaction, President and CEO, Stephen Twyerould stated, “We are pleased to have concluded this arrangement with Callinan Royalties, which allows for the advancement of the Gunnison In-situ Copper Project. Our immediate focus will be to use this investment to finish the pre-feasibility study. We anticipate the completion of this key milestone before the end of the year.”

The common shares issued to Callinan are subject to a statutory four month hold period expiring on December 1, 2013.

Project Summary
The Gunnison Copper Project is located in a remote section of Cochise County in southeastern Arizona. The focus of the project is the North Star deposit, which currently has a total Measured and Indicated mineral resource of 3.21 billion pounds of oxide copper (498 M tons at 0.32%) and an Inferred mineral resource of 0.83 billion pounds of oxide copper (156 M tons at 0.27%). Mineral resources which are not mineral reserves do not have demonstrated economic viability. Located within Arizona’s Copper Porphyry Belt, and in close proximity to road, rail and power, this oxide mineral resource has the potential to be mined using in-situ recovery methods.

About Excelsior
Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

About Callinan Royalties
Callinan Royalties is a Canadian company that creates and acquires mineral royalties.  The company uses its royalty income to provide alternative financing options to mineral exploration and development companies with attractive projects.  Callinan’s strategy is to create shareholder value over the long term by generating a portfolio of profitable mineral royalties.


Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by National Instrument 43-101 (NI 43-101). Dr. Twyerould has reviewed and approved the technical information disclosed in the “Project Summary” and “About Excelsior” sections of this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of inferred and indicated mineral resources; (ii) production from the Gunnison Project; (iii) the completion of a pre-feasibility study; (iv) the details of the transaction with Callinan; (v) the use of proceeds from the transaction; and (vi) the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

July 23, 2013   

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or “the Company”) is pleased to announce that it has entered into a Share Purchase and Royalty Option Agreement (the “Agreement”) with Callinan Royalties Corporation (“Callinan”). Under the terms of the agreement, Callinan will invest $1.0 million in the Company by way of a non-brokered private placement and up to a further $21.0 million through the purchase of a staged gross revenue royalty (“GRR”) on the Gunnison Project (the “Transaction”).

Details of the Transaction

Under the terms of the Agreement, Callinan will purchase 6,250,000 common shares of Excelsior at a price of $0.16 per common share for gross proceeds of $1.0 million. Concurrently, Callinan will acquire a 0.5% GRR on the Gunnison Project (the “Initial GRR”) for consideration of $2.0 million payable to Excelsior. The closing of this $3.0 million initial investment is expected to occur on or before July 31, 2013. Callinan will have the option to invest up to an additional $19.0 million into Excelsior in exchange for a further 2.5% GRR on the Gunnison Project based on development milestones (1.5%) and a construction option (1%).

1.5% of the additional GRR is staged and based upon Excelsior meeting specific development milestones leading up to the construction of a mining facility including completion of a prefeasibility study and successful raise of additional financing from other sources, completion of hydrology and metallurgy models to feasibility study level and successful administrative review of the key permits (Aquifer Protection Permit and the Underground Injection Control and Aquifer Exemption Permit). Upon the completion of each milestone, Callinan will have the option to purchase an additional 0.5% GRR for $3.0 million each.

The construction option gives Callinan the right to buy a 1% GRR for $10.0 million following completion of the feasibility study, receipt of all required permits and Excelsior securing a firm commitment for 50% of the required capital required for mine construction. One quarter (0.25%) of the construction option will vest with each $3 million paid by Callinan to Excelsior pursuant to the initial investment or upon the exercise of any of the royalty options. Should all the royalty options be exercised, Callinan would acquire a 3% GRR on the Gunnison project for total proceeds of $21.0 million.

The exercise price of the construction option may be adjusted if the feasibility study recommends the construction of a plant with capacity lower than 80 million pounds of copper per year based on an agreed upon schedule.

In addition, Callinan has the right to require Excelsior to purchase all or part of the Initial GRR for $2,000,000 pro-rated for the portion of the GRR sold back to Excelsior and payable in common shares of Excelsior priced at $0.25 per share. This right will expire at the earliest of 24 months from the closing date or the exercise of the first royalty option.

Stephen Twyerould, President and CEO of Excelsior, stated, “Despite the current challenges of the junior mining market, we have successfully delivered to our shareholders a significant financing partner via a non-dilutive structure. We look forward to concluding the next task at hand, which is the completion of the Pre-Feasibility Study.”

The Chairman of Excelsior, Mark Morabito, added, “This transaction stands as confirmation of the financial viability of the Gunnison Copper Project. We welcome Callinan as our financial partner and we applaud them on their astute decision to join with us to develop this remarkable resource.”

Proceeds from the Transaction will be used by the Company to advance the Gunnison Project and for general and working capital purposes. The Transaction is subject to approval of the TSX Venture Exchange.

Project Summary

The Gunnison Copper Project is located in a remote section of Cochise County in southeastern Arizona. The focus of the project is the North Star deposit, which currently has a total Measured and Indicated mineral resource of 3.21 billion pounds of oxide copper (498 M tons at 0.32%) and an Inferred mineral resource of 0.83 billion pounds of oxide copper (156 M tons at 0.27%). This oxide mineral resource has the potential to be mined using in-situ recovery methods. Mineral resources which are not mineral reserves do not have demonstrated economic viability.

About Excelsior

Excelsior is a mineral exploration company with a copper project located within the Copper Porphyry Belt of Arizona. The Gunnison Copper Project is situated close to the required infrastructure and its oxide copper resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects into production.

Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by National Instrument 43-101 (NI 43-101). Dr. Twyerould has reviewed and approved the technical information disclosed in the “Project Summary” and “About Excelsior” sections of this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.


ON BEHALF OF THE EXCELSIOR BOARD
"Stephen Twyerould" 
President & CEO


For further information regarding this press release, please contact: 
Excelsior Mining Corp. 
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs 
T: 604-681-8030 x240 
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of inferred and indicated mineral resources; (ii) production from the Gunnison Project; (iii) the completion of a pre-feasibility study; (iv) the details of the Transaction; (v) the financial viability of the Gunnison Project; and (vi) the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

March 4, 2013

 Highlights of Gunnison Oxide Resource Upgrade: 

  • 34% of metal in previous Indicated resource upgraded to Measured category
  • Grade of Measured resource: 0.41% Cu
  • Results based on 2012 drill program consisting of 10,502 ft (3,150 m) of diamond drilling
  • New resource estimate uses cut-off grade of 0.1% total copper

 

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to provide an update to its existing resource estimate for the North Star deposit, part of Excelsior’s Gunnison Copper Project, located in southeastern Arizona.

Resource estimation: North Star copper oxide only at 0.1% total copper cut-off grade. This mineral resource estimate is effective as of March 1, 2013.

Resource Category

Tons1

(Mton)

Grade2

(% Copper)

Cu Metal

(Billion lbs)

Measured 136.1 0.41 1.10
Indicated 362.3 0.29 2.11
Measured + Indicated 498.4 0.32 3.21
Inferred 156.2 0.27 0.83

 Notes: 1 US short ton, 2 total copper

 

“By successfully moving a significant percentage of our Indicated resource to the Measured category we have increased the geological certainty of the North Star deposit,” stated Stephen Twyerould, President and CEO. “We are also very pleased with the consistency of this new resource calculation as compared to the previous calculation which garners confidence in the management team and the robustness of the deposit.”

The previous mineral resource estimate of the oxide portion of North Star copper deposit consisted of an Indicated mineral resource of 511M tons grading 0.31% for 3.21 billion pounds of contained copper metal, and an additional Inferred mineral resource of 159M tons grading 0.28% for 0.88 billion pounds of contained copper metal.

The mineral resource estimate for the North Star deposit is based on results from 88 holes (129,272 feet) out of a total data base of 117 drill holes totalling 153,306 feet (ft) and is effective as of March 1, 2013. The resource estimation was performed by Independent Mining Consultants Inc. of Tucson, Arizona under the supervision of Dr. Roland Goodgame, VP Exploration and Director of Excelsior. Dr. Goodgame has reviewed and approved the technical information disclosed in this press release and is a Qualified Person (QP) as defined by National Instrument (NI) 43-101. Dr. Goodgame has verified the data underlying the results by supervising the drilling, sampling, assay, geology, quality assurance, quality control and interpretation. The estimate is classified as a Measured, Indicated or Inferred mineral resource, consistent with the CIM definitions referred to in NI 43-101. Excelsior is not aware of any environmental, permitting, legal, title, taxation, socio-political, marketing or other issues which may materially affect its estimate of mineral resources.

The mineral resource estimate is contained within a block model of the North Star deposit covering a surface area of 3.30 square miles and to a maximum depth of 2,575 feet below the topographic surface. The major geologic formations and oxidization types are incorporated into the block model based on the drill hole intercept data. The total copper grades are estimated using an ordinary kriging estimation technique from 25 ft drill hole composite data. The grade estimate for the sedimentary units uses a 700 ft circular by 50 ft search distance dipping 30 degrees east to parallel the general dip of the sedimentary units. The grade estimation respected the contacts of the various sedimentary units. The 700 ft distance is 70% of the variogram range. The total copper grades in the non-sedimentary units were estimated using a 500 ft spherical search. No copper grades are estimated in the overburden or un-mineralized rock units. Copper grade estimates based on eight or more holes are classified as Measured, grades based on three to seven holes are Indicated and grades based on less than three holes are Inferred.

All samples are prepared from manually split half-core sections on site in Arizona. Split drill core samples are then sent to Skyline Assayers & Laboratories in Tucson, Arizona for Total Copper and Sequential Copper analyses. Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program.

Project Summary

The Gunnison Copper Project is located in a remote section of Cochise County in southeastern Arizona. The focus of the project is the North Star deposit, which currently has a total Measured and Indicated mineral resource of 3.21 billion pounds of oxide copper (498 M tons at 0.32%) and an Inferred mineral resource of 0.83 billion pounds of oxide copper (156 M tons at 0.27%). This oxide mineral resource has the potential to be mined using in-situ recovery methods. Mineral resources which are not mineral reserves do not have demonstrated economic viability.

About Excelsior

Excelsior is an exploration company with a copper project located within the Copper Porphyry Belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide copper resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of measured, indicated and inferred mineral resources; and (ii) the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s Annual Information Form for the most recently completed financial year or other reports and filings with applicable Canadian securities regulatiors.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 14, 2013

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce results from recent metallurgical tests on copper oxide mineralization from its North Star deposit, part of Excelsior’s Gunnison Copper project, located in southeastern Arizona.

Two types of tests were performed.

  1. Submerged leach tests. These modified column-leach tests generated recoveries of acid soluble copper in the range of 82% to 95% over periods from 49 to 99 days. Higher recoveries were achieved with higher acid concentrations or longer leach times.
  2. Acid consumption tests. These tests were designed to evaluate relative acid consumption from in-situ leaching versus standard metallurgical testing. The tests demonstrated that standard metallurgical testing (including the submerged leach tests) significantly over-estimates acid consumption compared to values expected under in-situ operating conditions.

“We are extremely pleased with the high recovery and low acid consumption from these recent metallurgical tests,” stated Stephen Twyerould, President and CEO of Excelsior. “We are looking forward to the positive impact of combining these results with the recent favourable hydrological results as Excelsior continues to complete the work required to prepare a pre-feasibility study.”

Acid consumption test details

Due to the nature of the copper oxide mineralization at North Star, combined with standard metallurgical testing procedures on drill core, more of the un-mineralized rock known as “gangue” is inadvertently exposed to the acid solution than would be expected during normal in-situ mining conditions. This overexposure results in inflated acid consumption rates from metallurgical testing compared to those expected during actual in-situ operational conditions.

To demonstrate this, two pairs of identical samples were collected from the Martin formation within the North Star deposit. Man-made exposures on one half of each pair were coated with an impermeable acid resistant epoxy (see Figure 1), leaving the naturally occurring, mineralized fractures, uncoated. In this way, the leach solution could only react with the naturally occurring fractures in the coated sample, just as it would during real-world in-situ leaching conditions. As a control, the other half of the pair was left uncoated, as would occur in standard metallurgical testing (including the submerged leach tests described below). All samples were then submerged in a dilute acid solution and the amount of copper leached and acid consumed were monitored.

minnr20130214 fig 1 photo

Figure 1. Photograph showing epoxy and non-epoxy coated samples prior to testing.

After 72 days submerged in dilute sulfuric acid, the acid consumption was up to 82% less for the epoxy coated samples (simulating in-situ conditions), compared to the uncoated samples (see Table 1 below). While the testing is continuing, these results clearly show the inadvertent overestimation of acid consumption that occurs during standard metallurgical testing as compared to expected operational conditions.

Table 1. Results of comparative acid consumption tests.

Sample
Epoxy
Acid Consumption*
lbs/lb Cu
% change in acid
consumption
C1
Uncoated
11.30
 
C2
Coated
2.07
-82%
F4
Uncoated
23.93
 
F3
Coated
13.99
-42%

 * Acid consumption in pounds of acid consumed per pound of copper recovered

 

The acid consumption tests are being conducted by independent consultant Mountain States R&D International, Inc. of Tucson, Arizona under the supervision of Dr. Ronald J. Roman of Leach, Inc., Tucson, Arizona. Dr. Roman has reviewed and approved the technical information disclosed above in this news release and is an independent consultant who is a Qualified Person (QP) as defined by National Instrument (NI) 43-101. Dr. Roman has verified the data underlying the test results by designing the test procedure, supervising the test work, obtaining all the analytical data over the life of the experiment and performing the calculations presented above.

Submerged leach tests details

Submerged leach testing employs a protocol similar to column leach testing but modified to more closely reflect conditions during in-situ leaching. These tests were designed to be repeatable, and to evaluate the response of mineralization to in-situ leaching at different flow rates and acid concentrations.

To date, five of the 13 tests have been completed and the results are presented in Table 2 below. The remaining eight tests are still under active leaching and are expected to conclude in the next 30 to 60 days. The five tests completed are from the Lower Abrigo rock formation.

Higher acid concentrations (e.g. column 9) and/or longer leach times (e.g. column 13) generated higher recoveries, indicating 100% acid soluble copper is recoverable given sufficient time, acid concentration and economics.

Table 2. Results from submerged leach tests on the Lower Abrigo formation.

Column
Head Grade1 %Cu
Flow
rate2, lph/m2
Acid
content3, gpl acid
Days
leached4
Recovery, %
Acid
Consumption5
lbs/lbs
Cu total
Cu acid soluble
Cu acid soluble
9
0.31
0.23
22
15
61
95
19
10
0.33
0.26
37
10
49
85
12.6
11
0.28
0.21
22
10
61
87
17.3
12
0.29
0.21
22
5
61
82
9.7
13
0.28
0.20
11
5
99
92
12.6
  1. Calculated head grade
  2. Flow rate in litres per hour per cross-sectional square metre
  3. Acid concentration in grams per litre of free acid
  4. Days leached includes one or two days of post leach rinsing but does not include the extended post leach rinsing period
  5. Acid consumption in pounds of acid consumed per pound of copper recovered

The submerged leach tests are being conducted by independent laboratory SGS Metcon of Tucson, Arizona under the supervision of Dr. Ronald J. Roman, an independent consultant who is a Qualified Person as defined by NI 43-101. Dr. Roman has reviewed and approved the technical information disclosed in this news release. Dr. Roman has verified the data underlying the test results by designing the test procedure, supervising the test work, obtaining all the analytical data over the life of the experiment and performing the calculations presented above.

More detailed information concerning these metallurgical tests can be found on the Excelsior website at:http://excelsiormining.com/index.php/projects.

 

Project Summary

The Gunnison Copper Project is located in a remote section of Cochise County in southeastern Arizona. The focus of the project is the North Star deposit, which currently has a total Indicated mineral resource of 3.21 billion pounds of oxide copper (511 M tons at 0.31%) and an Inferred mineral resource of 0.88 billion pounds of oxide copper (159 M tons at 0.28%). This oxide mineral resource has the potential to be mined using in-situ recovery methods. Mineral resources which are not mineral reserves do not have demonstrated economic viability.

About Excelsior

Excelsior is an exploration company with a copper project located within the Copper Porphyry Belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide copper resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101. Dr. Twyerould has reviewed and approved the technical information disclosed in the “Project Summary” and “About Excelsior” sections of this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO

 

For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of inferred and indicated mineral resources; (ii) the future implications of the metallurgical test results; (iii) production from the Gunnison Project; (iv) the completion of a pre-feasibility study; (v) expected acid consumption rates and; (vi) the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s Annual Information Form for the most recently completed financial year or other reports and filings with applicable Canadian securities regulations.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 5, 2013   

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or “the Company”) is pleased to announce results from recent hydrological tests conducted at the Gunnison Copper Project, located in southeastern Arizona.

Aquifer testing at well NSH-5 indicated a hydraulic conductivity (K) of approximately 5 feet per day (ft/day) while aquifer testing at well NSH-4B had a K value of approximately 0.5 ft/day.  These results confirm Excelsior’s hydro-geological model and are higher than the average hydrologic conductivity of 0.4 ft/day (160 millidarcys) used in the Preliminary Economic Assessment (see news release dated December 1, 2011).

"We are very pleased with these results as they demonstrate not only our ability to predict hydrological conditions using our 3D structural model, but also demonstrate our ability to reproduce earlier results demonstrating the viability of in-situ recovery methods for our Gunnison Copper Project" says Stephen Twyerould, President and CEO of Excelsior.

The locations of these two wells were selected in order to validate the predicted aquifer conditions within highly and moderately fractured zones of the Gunnison Project’s North Star deposit.  Hydraulic conductivity is a measure of the efficiency with which water moves through rock; it is measured in feet per day and/or millidarcys.

Further results are expected this quarter, including new metallurgical data and new geological and resource models. All of these data will be used to complete a Pre-Feasibility study expected later this year.

Hydrology Details

Excelsior’s new 3D structural geological model allows for the prediction of structural domains throughout the deposit, which in turn allow for the prediction of permeability conditions.  From this structural model two sites were identified to validate the model and generate additional hydrological data for the up-coming Pre-Feasibility study. The locations were chosen to test medium and high flow zones representing the bulk of the copper oxide mineralization within the North Star deposit.

Five day constant rate pump tests were completed on wells NSH-5 and NSH-4B.  These wells were surrounded by 13 observation wells at different radial locations and distances from the pumping wells. Both drawdown and recovery phases of the test were monitored in the individual test wells and observation wells. In addition, extensive geophysical logging, geological logging, assaying, and water quality sampling were completed for the test wells and various observation wells.  

Well NSH-5 aquifer testing data indicated a hydraulic conductivity value of about 5 ft/day, measured over an interval from 724 to 1,024 feet below surface. Well NSH-4B aquifer testing data indicated a hydraulic conductivity value of about 0.5 ft/day over an interval from 685 to 1,031 feet below surface.  

These results are consistent with previous hydrological testing performed at the North Star Deposit (see news release dated September 6, 2011), and are consistent with K values from similar ISR projects.

Project Summary

The Gunnison Copper Project is located in a remote section of Cochise County in southeastern Arizona. The focus of the project is the North Star deposit, which currently has a total Indicated mineral resource of 3.21 billion pounds of oxide copper (511 M tons at 0.31%) and an Inferred mineral resource of 0.88 billion pounds of oxide copper (159 M tons at 0.28%). This oxide mineral resource has the potential to be mined using in-situ recovery methods. Please note, mineral resources which are not mineral reserves do not have demonstrated economic viability.

About Excelsior

Excelsior is an exploration company with a copper project located within the Copper Porphyry Belt of Arizona. The Gunnison Copper Project is located close to the required infrastructure and its oxide resource has the potential to be mined using in-situ recovery methods. The Excelsior team consists of experienced professionals with proven track records of advancing projects towards production.

Tim Oliver, P.E., Mining Services Manager at Haley & Aldrich, Inc., Tucson, AZ, reviewed the well construction, test protocol, results and calculations disclosed in this news release and finds them sound and reasonable. Mr. Oliver is a Qualified Person (QP) as defined by NI 43-101.

Excelsior’s exploration work on the Gunnison Property is supervised by Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101.

Dr. Twyerould has reviewed and approved the technical information disclosed in the “Project Summary” and “About Excelsior” sections of this news release.

Further details about Excelsior can be found at: http://www.excelsiormining.com. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"
President & CEO


For further information regarding this press release, please contact:
Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of inferred and indicated mineral resources; (ii) success of exploration activities; (iii) production from the Gunnison Project; and (iv) the ability to mine Gunnison using in-situ recovery mining techniques are forward-looking statements.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources, the realization of resource estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the environmental assessment process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s Annual Information Form for the most recently completed financial year or other reports and filings with applicable Canadian securities regulations.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

December 2, 2014                                                

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce the appointment of Rebecca Sawyer to the position of VP Sustainability and Mr. Carlo Valente as Chief Financial Officer.

Ms. Sawyer comes to Excelsior after a distinguished career as a highly accomplished environmental professional within the mining industry. Ms. Sawyer has held senior environmental engineering and manager positions with Freeport-McMoRan Inc., Simplot and Newmont Mining. She is a graduate of the University of Nevada and a resident of Bisbee, Arizona.

With her extensive experience in groundwater remediation, environmental planning, policy development, and regulatory compliance, Ms. Sawyer will lead Excelsior’s preparation of environmental permit applications for air and groundwater as required by the federal, state and local regulatory and governmental agencies.

Commenting on Ms. Sawyer’s appointment, Stephen Twyerould, President & CEO said, “The permitting process is entirely dependent upon the competence, experience, and professionalism of those coordinating the applications to the various regulatory agencies. We are enthused to have the full breadth of Rebecca Sawyer’s extensive experience, which will serve Excelsior well as we work to successfully navigate the permitting process.”

Excelsior has granted Ms. Sawyer, under the terms of its stock option plan, options to purchase up to 250,000 common shares at a price of $0.25 per share. The options are subject to vesting over a two year period and have an expiry date of December 1, 2019.

Additionally, the Company is pleased to announce the appointment of Carlo Valente as Chief Financial Officer, effective immediately.  Mr. Valente currently leads the multi-disciplined Business Development team at King & Bay West (“KBW”) and is the CFO of two junior mining companies under KBW’s management.  He was previously a Managing Director in the Deals group of PricewaterhouseCoopers (PwC). Mr. Valente is a Chartered Accountant and has over 17 years of international business development, corporate advisory, M&A and accounting and finance experience. He has worked on numerous significant transactions for both private equity and corporate clients in both Europe and North America.  In 1997, Mr. Valente joined PwC’s audit practice, where he mainly serviced natural resources and technology based companies.

Ms. Sonya Atwal has resigned as Chief Financial Officer and the board of directors of Excelsior wishes to thank Ms. Atwal for her invaluable contributions during her tenure with Excelsior.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the success of the permitting process ; and (ii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

November 5, 2014                                             

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that the metallurgical drill program has ended successfully at the Gunnison Copper Project in Arizona.

Ten (10) diamond-drill holes were completed totalling 5,899 feet of diamond drilling (11,306 feet in total drilling). Excelsior has submitted a total of 23 samples for metallurgical testing. The samples will be crushed and categorized by geologic factors; the tests are estimated to last 120 to 160 days based on separate leach cycles. Open cycle column leaching will include mature raffinate generated in previous column leach tests on ore from the North Star deposit or from the Johnson Camp mine which is adjacent to the North Star Deposit. Testing will be conducted by the independent laboratory, MAG (Minerals Advisory Group) of Tucson, Arizona under the supervision of Dr. Ronald J. Roman, an independent consultant who is a Qualified Person as defined by NI 43-101. Additional box leach and separate acid consumption tests will also be completed as part of the overall metallurgical program.

The results of these metallurgical tests will be used to determine copper extraction rates, acid consumption rates, and rinsing procedures and rates. Results will be used for both the permitting application process and the feasibility study.

For further information please see the Company’s previous news release dated September 15, 2014 – “Excelsior Provides Details on Metallurgical Drill Program” 

Commenting on this news, President & CEO, Stephen Twyerould stated, “Each metallurgical sample can weigh as much as 350 pounds; these are robust samples from which we will be able to gather feasibility-level data for the critical components that will drive our project: namely acid consumption and copper recovery rates. We fully expect that the results of this comprehensive metallurgical program will continue to support the potential for industry leading economics combined with environmental excellence.”

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com

ON BEHALF OF THE EXCELSIOR BOARD 

"Mark J. Morabito"
Executive Chairman


For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.  
www.excelsiormining.com
 

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details and expected results of the drill program; (ii) the robust economics of the Gunnison Project; (iii) details about acid consumption and copper recoveries; and (iv) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release. 

October 28, 2014

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that its hydrological drilling program has commenced at the Gunnison Copper Project in Arizona.

The primary component of the hydrological program will comprise 26 hydrology test wells totalling approximately 28,000 feet. Extensive geophysical logging and long term pump tests will be conducted on all holes with the objective of characterizing aquifer properties and the variations that control the movement of fluids through the mineralized bedrock. Because hydraulic conductivity, effective porosity, and aquifer continuity are critical in the mining process, the investigations of potential conduits or barriers to groundwater flow will prove invaluable to the ultimate design and success of the production well field. Results will be used to construct a numerical groundwater flow and transport model to simulate the planned in-situ recovery operations, and to demonstrate hydraulic control during operations. Additional long-term aquifer testing will also be conducted on previously constructed wells.

Hydrological data and modeling will be used for both the permitting application process and the feasibility study. All drilling, data interpretation, and modeling are expected to be completed in Q2 2015.

Commenting on the hydrological program, Stephen Twyerould, President & CEO, stated, “The economic advantages of the Gunnison Project are based largely upon the hydrology elements that define the project. The results of the hydrological program will represent the largest and perhaps the most important component of our feasibility study. We look forward to reaffirming that the conditions at Gunnison are optimal for safe and effective in-situ recovery copper mining.”

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD 

"Mark J. Morabito"
Executive Chairman


For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details and expected results of the drill program; (ii) the timing for the completion of drilling, data interpretation and modeling ; (iii) that the conditions at Gunnison are optimal for an in-situ recovery copper mine; and (iv) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release. 

October 21, 2014

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce the closing of the second tranche of the US$10M equity financing and strategic partnership announced with an affiliate of Greenstone Resources L.P. (“Greenstone”). In conjunction with this closing, Greenstone purchased 11,889,507 common shares of Excelsior for US$3,606,658.36 at a price of C$0.34 per common share. This transaction received shareholder approval at the Company’s annual and special meeting of shareholders that was held on September 30, 2014 in Vancouver (the “Meeting”). The exact number of common shares was determined based on the noon US$/C$ exchange rate as quoted by the Bank of Canada on the day of the Meeting. Greenstone now holds 32.4 million common shares or approximately 28.2% of Excelsior’s issued and outstanding common shares. The common shares issued in this second closing will be subject to a four month hold period expiring on February 21, 2015.

For further information please see the Company’s previous news release dated August 13, 2014 – “Excelsior Announces Strategic Partnership and US$10M Financing with Greenstone Resources. 

Excelsior also welcomes Lord Robin Renwick, Lord Renwick of Clifton, to the Board of Directors as the second Greenstone nominee.

Lord Renwick has led a long and distinguished career as a diplomat having entered the British Foreign Service in 1963. Following postings in Dakar, New Delhi, Paris, Rhodesia, and Washington, he served as British ambassador to South Africa from 1987-91. He then served as British ambassador to the United States from 1991-95. In 1997 he became a member of the House of Lords.

Lord Renwick was Vice Chairman, Investment Banking, JP Morgan Europe from 2000-2014 and Vice Chairman of JP Morgan Cazenove from 2005-2014. He is also Deputy Chairman of Fleming Family & Partners (FF&P). He currently serves as a Director of Compagnie Financiere Richemont, Kazakhmys plc. He has served on the Boards of Fluor Ltd, British Airways, BHP Billiton, Fluor Corporation, SABMiller plc, GEM Diamonds, Harmony Gold Mining Co Ltd, Canal Plus, Liberty International and as a Trustee of ‘The Economist’. He has advised on a number of IPOs on the London Stock Exchange, including Billiton, South African Breweries, Xstrata plc, Kazakhmys and Ferrexpo. Lord Renwick has agreed to Chair Excelsior’s Corporate Governance Committee.

Commenting on this news, Mark Morabito, Executive Chairman, said, “The closing of this strategic partnership and the appointment to the Board of such an outstanding nominee is a further endorsement of the quality of the Gunnison Project and the strength of our management team. As Excelsior continues to move from milestone to milestone, the Board looks forward to being the beneficiary of Lord Renwick’s vast experience and business acumen.”

In conjunction with his appointment, Lord Renwick has been granted 500,000 incentive stock options exercisable for a period of five years at an exercise price of C$0.26 per common share, all in accordance with the Company’s Stock Option Plan.

About Greenstone

Greenstone is a private equity fund specialising in the mining and metals sector. The Greenstone team has over 80 years of experience in the sector covering all aspects of mining project development. Further details on Greenstone can be found at www.greenstoneresources.com.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.


ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman


For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

October 15, 2014

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the“Company”) is pleased to announce that a resource upgrade drill program has commenced at the Gunnison Copper Project in Arizona.

The Company plans to drill 13 diamond drill holes totalling 16,890 feet (Please, see “Budgeted Resource Holes Map” for the drill hole locations). The goal of the program will be to successfully convert a majority of the inferred mineral resource of 1.4 billion pounds of copper (338 tons grading 0.21% Cu) into the measured & indicated mineral resource categories. A new resource calculation is expected by Q2, 2015.

Commenting on the drill program, Stephen Twyerould, President & CEO, Stated, “We have already established a large probable mineral reserve at Gunnison with sufficient metal to support a robust and long-lived operation; however, with just a modest drill program, we have the genuine opportunity to upgrade a significant proportion of our inferred resource into the measured & indicated categories. As we work to complete the feasibility study, an increase in the size of our resource should improve the potential life-of-mine economics of the project, while at the same time, provide us with greater flexibility during operations.” 

The Current Mineral Resource and Mineral Reserve Calculations are as follows: 

North Star Mineral Resources (Oxide and Transition at 0.05% cut-off)

Category

Short Tons (million)

Total Copper %

Pounds of Cu (million)

Measured

158

0.38

1,205

Indicated

525

0.26

2,704

Total M&I

683

0.29

3,909

Inferred

338

0.21

1,397

 

North Star Mineral Reserves (Oxide and Transition at 0.05% cut-off)

Category

Short Tons (million)

Total Copper %

Pounds of Cu (million)

Probable

632

0.29

3,614

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

Further information about the Gunnison Copper Project and the results of the Prefeasibility Study can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"

Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details and timing of completion of the drill program, (ii) the expected results of the drill program, (iii) the estimation of mineral resources and mineral reserves and the timing of a new mineral resource estimate, (iv) the potential to upgrade inferred mineral resources to the measured and indicated categories, (v) expansion of the mine life of the Gunnison Project, (vi) the conversion of mineral resources to mineral reserves and (vi) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release

October 9, 2014   

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that the TSX Venture Exchange has completed its review process for the first tranche of the US$10M equity financing and strategic partnership announced with an affiliate of Greenstone Resources L.P. (“Greenstone”). As a result, the escrowed funds totalling $6,393,341 have been released to the Company and the certificate for the 20,580,000 common shares has been released to Greenstone. For further information please see the Company’s previous news release dated August 13, 2014 – “Excelsior Announces Strategic Partnership and US$10 M Financing with Greenstone Resources.”

The second tranche of the private placement received shareholder approval at the Company’s annual and special meeting of shareholders that was held on September 30, 2014 in Vancouver (the “Meeting”). The second tranche is scheduled to close on October 20, 2014 and will see Greenstone purchase 11,889,507 common shares of Excelsior for US$3,606,658.36 at price of C$0.34 per common share. The exact number of common shares was determined based on the noon US$/C$ exchange rate as quoted by the Bank of Canada on the day of the Meeting. Upon closing of the second tranche of the private placement, Greenstone will hold 32.4 million common shares or approximately 28.2% of Excelsior’s issued and outstanding common shares.

About Greenstone

Greenstone is a private equity fund specialising in the mining and metals sector. The Greenstone team has over 80 years of experience in the sector covering all aspects of mining project development.  Further details on Greenstone can be found at www.greenstoneresources.com.

About Excelsior 

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014. 
For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the timing and closing of the second tranche of the private placement; and (ii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators. 

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

October 7, 2014   

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce the results of a new Economic Impact Study (“EIS”) for the Gunnison Copper Project (the “Gunnison Project”), located in southern Arizona. The study, completed by researchers at the L.W. Seidman Research Institute, W.P. Carey School of Business, Arizona State University, Tempe, AZ, illustrates that the Gunnison Project will generate significant positive economic benefit at both the State and County levels.

Highlights of the Gunnison Project Economic Impact Study include:

Creation of an average of 819 jobs annually state-wide;

  • 108 direct, on-site jobs; 711 in-direct or “secondary” jobs;
  • US$2.94 billion added to Arizona’s Gross State Product;
  • US$319.9 million in State revenue generated directly from the project;
  • US$756.8 million in economic activity generated in Cochise Country alone.

“This Economic Impact Study reconfirms that the Gunnison Project will have a dramatic economic impact on the local communities of Cochise County, as well as a profound influence on the economy of the State,” said Stephen Twyerould, President and CEO.  “As a resident of Arizona myself, I take great pride in being a part of a project that is poised to generate such substantial employment and wealth creation.”

The full report, entitled Economic Impact of the Excelsior Mining Corporation on Cochise County and the State of Arizona is available here:
www.excelsiormining.com/images/Presentations/Economic_Impact_Report_September2014.pdf

Using the data from the Gunnison Project’s Prefeasibility Study (“PFS”) (see news release dated February 18, 2014), this Economic Impact Study examined two scenarios: one in which Excelsior builds its own acid plant and one in which it acquires acid from a commercial supplier for the life of the Gunnison Project. The numbers and dollar values quoted in this news release are all based on Excelsior building its own acid plant and span the entire 27 year life of the Gunnison Project. This Economic Impact Study updates the previous Economic Impact Study that Excelsior had prepared based on the Preliminary Economic Assessment on the Gunnison Project.

The economic forecasts used in this study are based on an Arizona-specific version of the Regional Economic Models Inc. (“REMI”) regional forecasting model to produce numeric estimates of the impact of a business upon the economy.  This is a dynamic forecasting and analysis tool developed by Regional Economic Models Inc., which is recognized by the business and academic communities as the leading economic modeling tool available. REMI is also an open model in that it explicitly accounts for trade and migration flows in and out of the state, and between counties.  The use of a county level model enables a more detailed disaggregation of results to occur, thereby estimating the economic impacts that "leak" into other counties in Arizona. The version of the REMI forecasting model used in this study is similar to the version currently in use by the Arizona Department of Commerce, the Arizona Joint Legislative Budget Committee, the Arizona Department of Housing and Arizona State University.

A complete explanation of the model and discussion of the empirical estimation of the parameters/equations can be found at www.remi.com.

About L.W. Seidman Research Institute

The L.W. Seidman Research Institute, which is independent of Excelsior, serves as a link between the local, national, and international business communities and the W.P. Carey School of Business at Arizona State University.  Utilizing a staff of experienced economists, and tools that support sophisticated statistical modeling and computer-based planning, the Institute collects, analyzes, and disseminates information about local economies, benchmarks industry practices, and identifies emerging business research issues that affect productivity and competitiveness. The Gunnison Economic Impact Study was co-authored by Mr. Dennis Hoffman and Ms. Eva Madly, both of whom are independent of Excelsior.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project and the results of the PFS can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.
For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman


For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the life of the Gunnison Project, (ii) future economic benefits from the Gunnison Project including jobs, gross state product and revenue forecasts, (iii) results of the PFS, and (iv) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators. 

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 15, 2014                                           

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the“Company”) is pleased to announce that a metallurgical drill program has commenced at the Gunnison Copper Project in Arizona.

The program will comprise ten diamond-drill holes totalling 6400 feet of diamond drilling (11,900 feet total). Two diamond drill rigs and one rotary air drill rig for pre-collars will be used to complete this program. Please, see “Budgeted Metallurgy Holes Map” for the metallurgical drill hole locations. The samples collected will be used to conduct extensive metallurgical testing, including column tests, acid consumption tests and rinse tests. The goal of the program will be to further enhance the understanding of the leaching behaviors of the deposit and reduce uncertainties concerning rates, recoveries and costs. Specific areas targeted for investigation will be sweep efficiency, copper recovery rates, acid consumption rates, and rinsing procedures and rates. This data will be used for both the permitting application process and the Feasibility Study.

Commenting on the program, President & CEO, Stephen Twyerould said, “All of the previous metallurgical testing that we have completed, plus all of the historical data, has defined a project with industry-leading robust economics based on low acid consumption and achievable copper recoveries. We will look to mirror past results as we move the metallurgical component of the Gunnison copper project to feasibility-level.”

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

 ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"

Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details and expected results of the drill program; (ii) the robust economics of the Gunnison Project; (iii) details about acid consumption and copper recoveries; and (iv) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 9, 2014                                                
 
Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that feasibility-level data collection has commenced at the Gunnison Copper Project in Arizona. This work will include archeological surveys, detailed site surveys, infrastructure and water studies. Data collection for input into the Feasibility Study will continue into 2015.
 
In addition to the data collection program, Excelsior is expected to shortly announce details concerning Metallurgical, Hydrological and Resource Upgrade drill programs. Information on these programs will be revealed in subsequent news releases.
 
Commenting on this news, Stephen Twyerould, President & CEO commented, “With the Gunnison Project now well-funded, we will begin the next phase of development in earnest. Going forward our sole focus will be on commencement of permitting and completion of a full Feasibility Study, leveraging the work done for completion of the Prefeasibility Study.”
 
In January of this year, the Company announced the results of a comprehensive Prefeasibility Study (“PFS”) on the North Star Deposit of the Gunnison Copper Project, located in southern Arizona. The PFS was completed by M3 Engineering & Technology Corporation (“M3”) of Tucson, AZ and is effective as of January 13, 2014. The technical report summarizing the results of the PFS was prepared in accordance with National Instrument (“NI”) 43-101 and is available on SEDAR at www.sedar.com and Excelsior’s website.
 
Highlights of the North Star Gunnison Copper Project PFS “Acid Plant” option include:

  • Pre-tax Net Present Value (“NPV”) of $1.24 billion (after-tax $0.826 billion) at a 7.5% discount rate (using a copper price of $2.75/lb)
  • Pre-tax Internal Rate of Return (“IRR”) of 59.7% (after-tax 44.7%)
  • Pre-tax payback period of 1.8 years (after-tax 2.4 years)
  • Initial estimated capital cost (excluding sustaining capital) of $284.84 million
  • Average life-of-mine operating costs of US$0.69 per pound
  • Other costs of $0.13 per pound, including Royalties of $0.029 per pound
  • Annual production rate of 110 million pounds of copper for the first 14 years, then declining for a 20 year mine life, with a total of 1.682 billion pounds of copper produced over the life of the mine.

Results of the PFS disclosed in this press release are in USD and pre-tax (except where otherwise indicated).
 
About Excelsior 
 
Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project and the results of the PFS can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.
 
Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com.
 

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

 
For further information regarding this press release please contact:
Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com
 
Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details of the data collection program; (ii) the timing of the Feasibility Study; (iii) the commencement of drill programs; (iv) the advancement of the Gunnison Project; (v) the technical viability of the Gunnison Project; (vi) the future price of copper; (vii) the results of the PFS including statements about future production, future operating and capital costs, the projected IRR, NPV and payback period; and (viii) the ability to mine the Gunnison Project using in-situ recovery mining techniques.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators. 

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

September 5, 2014                                      

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the“Company”) is pleased to announce the closing of the first tranche of the US$10 million financing and strategic partnership agreement with an affiliate of Greenstone Resources L.P. (“Greenstone”), whereby Greenstone has purchased 20,580,000 common shares, equal to approximately 19.9% of the issued and outstanding common shares of Excelsior, at a price of C$0.34 per common share in return for gross proceeds of US$6,393,341.64. For further information please see the Company’s previous news release dated August 13, 2014 – “Excelsior Announces Strategic Partnership and US$10 M Financing with Greenstone Resources.”

In connection with this transaction, Mr. Michael Haworth will immediately join the Board of Directors as the first nominee director of Greenstone.

The second tranche of the private placement shall require shareholder approval under the rules and policies of the TSX Venture Exchange as it will result in the creation of a new “control person”. The Company intends to obtain shareholder approval for the second tranche at its annual and special meeting of shareholders currently scheduled for September 30, 2014 in Vancouver (the “Meeting”). Assuming shareholder approval is obtained, the second tranche is scheduled to close within 15 business days after the Meeting. The second tranche will see Greenstone purchase US$3,606,658.36 of common shares of Excelsior at price of C$0.34 per common share. The exact number of common shares will be determined based on the noon US$/C$ exchange rate as quoted by the Bank of Canada on the day of the Meeting. This portion of the transaction remains subject to a number of conditions, including, without limitation, receipt of all regulatory approvals, including the approval of the TSX Venture Exchange and the applicable securities regulatory authorities.

The TSX Venture Exchange has conditionally approved the closing of the transaction, however it has not yet completed its review of certain documents. As a result, the closing has occurred but the proceeds of the first tranche of the private placement, together with the 20,580,000 common shares subscribed by Greenstone, were deposited into escrow on closing. The escrowed funds and common shares will be released to the Company and Greenstone, respectively, upon the completion of the TSX Venture Exchange’s review of these documents.  

The net proceeds of the offering will be used for the continued development of the company's Gunnison Copper Project and for working capital and general corporate purposes. Excelsior will pay a finder’s fee equal to $250,000 in accordance with the rules and policies of the TSX Venture Exchange. The common shares issued to Greenstone are subject to a statutory four month hold period expiring on January 6, 2015.

About Greenstone

Greenstone is a private equity fund specialising in the mining and metals sector. The Greenstone team has over 80 years of experience in the sector covering all aspects of mining project development. Further details on Greenstone can be found at www.greenstoneresources.com.

Greenstone is acquiring the securities in the offering described herein for investment purposes. Depending on market conditions and other factors, Greenstone may from time to time acquire and/or dispose of securities of Excelsior or continue to hold its current position.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"

Executive Chairman

For further information regarding this press release and/or for a copy of the early warning report required to be filed with the applicable securities commissions in connection with the offering, please contact:

Excelsior Mining Corp.

JJ Jennex, Vice President, Corporate Affairs

T: 604-681-8030 x240

E: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the timing and closing of the second tranche of the private placement; (ii) the anticipated use of proceeds of the private placement; and (iii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

August 13, 2014                                                    

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the“Company”) is pleased to announce that it has entered into an agreement with an affiliate of Greenstone Resources L.P. (“Greenstone”), whereby Greenstone will purchase, by way of a treasury offering, common shares of Excelsior at a price of C$0.34 per common share for total gross proceeds of US$10 million. Settlement will occur in United States dollars. It is estimated that upon closing, this transaction would represent approximately 28% of Excelsior’s shares issued and outstanding, estimated to be approximately 32 million common shares.

Details of the Transaction

The transaction is scheduled to close in two separate tranches. The first settlement will occur within 15 business days of this announcement. This first tranche will see Greenstone purchase 20,580,000 common shares, equal to approximately 19.9% of the issued and common shares of Excelsior, in return for gross proceeds of US$6,393,341.64.

The second tranche shall require shareholder approval under the rules and policies of the TSX Venture Exchange as it will result in the creation of a new “control person”. The Company intends to obtain shareholder approval for the second tranche at its annual and special meeting of shareholders currently scheduled for September 30, 2014 in Vancouver (the “Meeting”). Assuming shareholder approval is obtained, the second tranche is scheduled to close 15 business days after the Meeting. The second tranche will see Greenstone purchase US$3,606,658.36 of common shares of Excelsior at price of C$0.34 per common share. The exact number of common shares will be determined based on the noon US$/C$ exchange rate from the Bank of Canada exchange rate on the day of the Meeting.

Executive Chairman, Mark Morabito, stated, “To be able to do a common share transaction of this size at a premium to the market price, despite all the current challenges of junior mining market, is a notable endorsement of the strength of the Gunnison project and the quality of our management team. Coming on the heels of the $4 million bought-deal financing by Dundee Capital Markets, and the $3 million royalty-option execution by Callinan Royalties, Excelsior is now substantially funded as the project enters the feasibility and permitting stage of development.”

Commenting on the transaction, Stephen Twyerould said, “One of our primary goals for 2014 was to secure a financing partner; we have exceeded our objective by creating a partnership with a firm that has vast knowledge of the mining industry; Greenstone fully intends to apply their wealth of experience to help advance the Gunnison Project successfully into production.”

As part of the transaction, Greenstone will have the right to nominate two directors to the Excelsior Board. The first director will be nominated on or before the closing of the first tranche of the private placement. The second director will be nominated on or before the closing of the second tranche of the private placement.

A Project Steering Committee will be formed to enable Excelsior to take full advantage of Greenstone’s industry experience. The Steering Committee will be responsible for assessing and reviewing the overall progress of the project. Chaired by Excelsior’s CEO, the Project Steering Committee shall meet on a regular basis.

The offering is subject to a number of conditions, including, without limitation, receipt of all regulatory approvals, including the approval of the TSX Venture Exchange and the applicable securities regulatory authorities, and the receipt of shareholder approval for the second tranche of the private placement.

The net proceeds of the offering will be used for the continued development of the company's Gunnison Copper Project and for working capital and general corporate purposes. Excelsior will pay a finder fee in accordance with the rules and policies of the TSX Venture Exchange.

About Greenstone

Greenstone is a private equity fund specialising in the mining and metals sector. The Greenstone team has over 80 years of experience in the sector covering all aspects of mining project development. Further details on Greenstone can be found at www.greenstoneresources.com.

Greenstone is acquiring the securities in the offering described herein for investment purposes. Depending on market conditions and other factors, Greenstone may from time to time acquire and/or dispose of securities of Excelsior or continue to hold its current position.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com. 

ON BEHALF OF THE EXCELSIOR BOARD 

" Mark J. Morabito"

Executive Chairman

 

For further information regarding this press release and/or for a copy of the early warning report required to be filed with the applicable securities commissions in connection with the offering, please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

www.excelsiormining.com


Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the timing and closing of the private placement; (ii) the anticipated use of proceeds of the private placement; and (iii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

August 7, 2014

Excelsior Mining Corp. ("Excelsior" or the "Company") (TSX-V: MIN) is pleased to announce that it has engaged Sterling Marketing Corp. ("Sterling") to assist in the creation and implementation of a comprehensive marketing and investor communications program for the Company.

Sterling is based in Vancouver and provides marketing and investor relations services to public companies in the resource sector. The principal and owner of Sterling is Mr. Scott Gibson. Sterling will be responsible for advising the Company with respect to corporate development, maximizing value for shareholders, increasing the Company's exposure to potential shareholders, as well as managing and increasing the effectiveness of the Company's marketing and communications materials.

Scott Gibson, Chairman of Sterling states, "I am excited about working with the Excelsior team, and specifically working again with Mark Morabito who has the proven ability to develop and finance high quality assets like the Gunnison Copper Project.  It is the strength of the management team and the economics of Gunnison that make Excelsior such an attractive opportunity."

Under the terms of the agreement, and subject to TSX Venture Exchange approval, Sterling will receive a fee of $10,000 per month, and be granted stock options to purchase 600,000 common shares of the Company at a price of $0.25 per share for a period of five years. The options shall vest quarterly in accordance with the policies of the TSX Venture Exchange and the Company's Stock Option Plan. The Company has sufficient cash in its treasury to pay the fees for Sterling's services. The agreement with Sterling is for a period of one year.

Sterling is independent of the Company and does not have any direct or indirect interest in the Company, except for the ownership of common shares of Excelsior by its principal. Sterling and it principals do not engage in market making activities and the firm will restrict its services to public relations and investor relations consulting. Sterling will provide its services from its offices located in Vancouver.

Excelsior would also like to confirm that the engagement of Liolios Group Inc. as an investor relations consultant was terminated in April 2014.

The Company also announces that, subject to TSX Venture Exchange approval, it intends to extend the term of a total of 5,829,667 stock options (the "Options"), which are currently scheduled to expire on December 18, 2014, May 5, 2015 and October 14, 2015. The Options were issued with an original term of five years and the term will be extended such that their new expiry date is December 31, 2018.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: "Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study" dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J Morabito"
Executive Chairman

For further information regarding this press release, please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Sterling Marketing Corp.
Scott Gibson, Chairman
T: (604) 697-0028
E: scott@sterlingmarketingcorpThis email address is being protected from spambots. You need JavaScript enabled to view it.
www.sterlingmarketingcorp.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning (i) the benefits of the agreement with Sterling; and (ii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word "will". Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the "Risk Factors" section of the Company's reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

July 29, 2014


Excelsior Mining Corp. (“Excelsior” or the “Company”) (TSX-V: MIN) 
is pleased to announce that Callinan Royalties Corp. (“Callinan”) has exercised the first royalty option under the Share Purchase and Royalty Option Agreement dated July 19, 2013 (the “Agreement”) between the Company and Callinan. As a result of the exercise of the first royalty option Callinan has paid the Company $3.0 million and in return received a 0.5% gross revenue royalty (“GRR”) on the Gunnison Project. Combined with the initial GRR that Callinan acquired in July 2013, Callinan now holds a 1.0% GRR on the Gunnison Project.

Commenting on the transaction, Chief Executive Officer Stephen Twyerould stated, “Callinan’s exercise of this royalty option is a further endorsement of the quality of the Gunnison Project and our management team. We look forward to moving our low-cost in-situ copper project forward with the support of Callinan Royalties.”

With the exercise of the first royalty option, under the terms of the Agreement, Callinan has the remaining option to invest up to an additional $16.0 million into Excelsior in exchange for a further 2.0% GRR on the Gunnison Project consisting of Development Milestones (1.0% GRR) and a Construction Milestone (1.0% GRR). The remaining Development Milestones include: (1) completion of hydrology and metallurgy models to feasibility study level and (2) successful administrative review of the Aquifer Protection Permit and the Underground Injection Control and Aquifer Exemption Permit. Upon the completion of each milestone, Callinan will have the option to purchase an additional 0.5% GRR for $3.0 million each.

The Construction Milestone gives Callinan the right to buy a 1.0% GRR for $10.0 million following completion of the feasibility study, receipt of all required permits and Excelsior securing a firm commitment for 50% of the required capital required for mine construction. One quarter (0.25%) of the construction option will vest with each $3.0 million paid by Callinan to Excelsior pursuant to the initial investment or upon the exercise of any of the royalty options. Should all the royalty options be exercised, Callinan would acquire a 3% GRR on the Gunnison project for total proceeds of $21.0 million.

The exercise price of the construction option may be adjusted if the feasibility study recommends the construction of a plant with capacity lower than 80 million pounds of copper per year based on an agreed upon schedule.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

“Mark J Morabito” 
Executive Chairman

For further information regarding this press release, please contact:

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.   
www.excelsiormining.com  

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning (i) the exercise of future royalty options; and (ii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

June 27, 2014


Excelsior Mining Corp. (“Excelsior” or the “Company”) (TSX-V: MIN) 
is pleased to announce that it has completed its previously announced bought deal financing (the “Offering”) led by Dundee Securities Ltd. (the “Underwriter”). Pursuant to the Offering, 16,000,000 units of the Company (the “Units”) were issued at a price of $0.25 per Unit for total gross proceeds of $4,000,000. The Underwriter has been granted the option to purchase up to an additional 15% of the Offering, exercisable in whole or in part at any time up to 30 days after the closing of the Offering.

Each Unit consists of one common share (“Share”) of the Company and one-half of one common share purchase warrant. Each whole common share purchase warrant entitles the holder thereof to acquire one Share at a price of $0.45 for a period of 24 months following the closing of the Offering.

The net proceeds of the Offering will be used for the continued development of the Company’s Gunnison Copper Project and for working capital.

In connection with the Offering, the Underwriter has received a cash commission equal to 6.0% of the gross proceeds raised under the Offering and that number of non-transferable broker warrants equal to 6.0% of the number of Units sold. Each broker warrant is exercisable into one Share of the Company for a period of 24 months from the Closing Date at a price of $0.45.

This news release does not constitute an offer of securities for sale in the United States. The securities being offered have not been, nor will they be, registered under the Unites States Securities Act of 1933, as amended, and such securities may not be offered or sold within the United States absent U.S. registration or an applicable exemption from U.S. registration requirements.

Management Changes

Excelsior is pleased to announce that Mark Morabito who was previously Chairman of the Board has been appointed as Executive Chairman of the Company. Mr. Morabito has been the Chairman of the Company since 2010 and in his expanded role as Executive Chairman he will have primary responsibility for capital markets, financing and shareholder communications. In addition, Roland Goodgame who was previously Vice President, Exploration has been appointed Executive Vice President. Mr. Goodgame’s promotion coincides with the movement of the Company into the feasibility study stage and he will take a lead role in the work required to complete the feasibility study, reporting directly to the President & Chief Executive Officer.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould" 
President & CEO

For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.   
www.excelsiormining.com  

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning (i) the anticipated use of proceeds of the Offering; and (ii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

June 6, 2014                                                

Excelsior Mining Corp. ("Excelsior" or the "Company") is pleased to announce that it has entered into an agreement with Dundee Securities Ltd. (the "Underwriter"), to purchase, on a "bought deal" basis by way of a short form prospectus, 16,000,000 units of the Company (the "Units") at a price of $0.25 per Unit for total gross proceeds of $4,000,000 (the "Offering"). The Underwriter has been granted the option to purchase up to an additional 15% of the Offering, exercisable in whole or in part at any time up to 30 days after the closing of the Offering (the "Option"). In the event that the Option is exercised in its entirety, the aggregate gross proceeds to the Company from the Offering will be $4,600,000.

Each Unit shall consist of one common share ("Share") of the Company and one-half of one common share purchase warrant. Each whole common share purchase warrant shall entitle the holder thereof to acquire one Share at a price of $0.45 for a period of 24 months following the closing of the Offering.

The Offering is scheduled to close on or about June 30, 2014. The Units will be offered in all provinces of Canada (except Quebec) by way of a short form prospectus. The Offering is subject to a number of conditions, including, without limitation, receipt of all regulatory approvals, including the approval of the TSX Venture Exchange and the applicable securities regulatoryauthorities.
 
The net proceeds of the Offering will be used for the continued development of the Company's Gunnison Copper Project and for working capital and general corporate purposes.
 
In connection with the Offering, the Underwriter will receive a cash commission equal to 6.0% of the gross proceeds raised under the Offering (inclusive of the Option) and that number of non-transferable broker warrants equal to 6.0% of the number of Units sold (inclusive of the Option). Each broker warrant shall be exercisable into one Share of the Company for a period of 24 months from the Closing Date at a price of $0.45.

This news release does not constitute an offer of securities for sale in the United States. The securities being offered have not been, nor will they be, registered under the Unites States Securities Act of 1933, as amended, and such securities may not be offered or sold within the United States absent U.S. registration or an applicable exemption from U.S.
registration requirements.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: "Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study"dated February 14, 2014.
 
For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD
     
Stephen Twyerould, President & CEO 

Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the timing and closing of the Offering; (ii) the anticipated use of proceeds of the Offering; and (iii) the advancement of the Gunnison Project.
 
In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.


Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the "Risk Factors" section of the Company's reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

 
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the“Company”) announces that Dundee Capital Markets has initiated equity analyst coverage of Excelsior.

Dundee Capital Markets equity research is posted on their corporate website atwww.dundeecapitalmarkets.com and can be accessed upon registration or by contacting Mr. Joseph Gallucci, MBA, at Dundee Capital Markets.

All reports on Excelsior prepared by analysts represent the views of such analysts and are not necessarily those of Excelsior. Excelsior is not responsible for the content, accuracy or timelines of any analyst’s website. 

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.   

For more information on Excelsior, please visit our website at www.excelsiormining.com.

 

ON BEHALF OF THE EXCELSIOR BOARD 

"Stephen Twyerould"

President & CEO

  

For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it. 
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to the advancement of the Gunnison Project.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the“Company”) is pleased to announce that it has filed a National Instrument (“NI”) 43-101 Technical Report dated February 18, 2014 on SEDAR at www.sedar.com. The Report is with respect to Excelsior’s Prefeasibility Study (“PFS”) on the Gunnison Copper Project in southern Arizona; the results of which were originally announced in a January 17, 2014 news release. The final results of the PFS are presented below in this news release. Some of the final results differ from the results set out in the January 17, 2014 press release, but the variance is less than 1% unless otherwise noted below. Results of the PFS disclosed in this news release are in USD and pre-tax (except where otherwise indicated).


Prefeasibility Study Results

Highlights of the North Star Gunnison Copper Project PFS “Acid Plant” option include:

  • Pre-tax Net Present Value (“NPV”) of $1.24 billion (after-tax $0.824 billion) at a 7.5% discount rate (using a copper price of $2.75/lb);
  • Pre-tax Internal Rate of Return (“IRR”) of 59.7% (after-tax 44.7%);
  • Pre-tax payback period of 1.8 years (after-tax 2.4 years);
  • Initial estimated capital cost (excluding sustaining capital) of $284.84 million;
  • Average life-of-mine operating costs of US$0.69 per pound;
  • Other costs of $0.13 per pound, including Royalties of $0.029 per pound;
  • Annual production rate of 110 million pounds of copper for the first 14 years, then declining for a 20 year mine life, with a total of 1.682 billion pounds of copper produced over the life of the mine.

Financial Analysis

As highlighted in the tables below, the PFS demonstrates robust project economics in both the “Acid Plant” and “Non-Acid Plant” scenarios, with the Acid Plant option adding an additional $173.8 million to the project pre-tax NPV. Based on an initial annual production rate of 110 million pounds, the PFS indicates that including an Acid Plant as a component of the project, generates a pre-tax NPV of $1.24 billion, at a cash flow discount rate of 7.5%. The pre-tax IRR for this option is 59.7% with a payback period of 1.8 years. On an after-tax basis, the PFS shows an NPV7.5 of $824.17 million, IRR of 44.7% and a payback period of 2.4 years.

Without an Acid Plant, the project still has a significant pre-tax NPV7.5 of $1.06 billion and an IRR of 61.3%, (after-tax NPV7.5 of $720.4 million and an IRR of 46.1%). The after-tax analysis is based on a number of assumptions which will be fully set out in the Report. The level of accuracy of the PFS is considered to be+/-20%.

Both scenarios used the following parameters over the 20 year life of the project:

  • copper selling price of $2.75 per pound,
  • total copper recovery of approximately 47% (based on a combination of metallurgical recovery and sweep efficiency),
  • average of 8.14 pounds of acid consumed for every pound of copper produced,
  • acid price of $45.47/ton for the Acid Plant option and $125/ton for the Non-Acid Plant option,
  • state tax rate of 6.97%, and
  • a federal tax rate of 35%.

PRE-TAX

Acid Plant

Non-Acid Plant

IRR

59.7%

61.4%

Payback (years)

1.8

1.5

NPV (million $)

 

 

Discount Rate

 

 

0%

2,368.4

1,956.0

5%

1,522.7

1,293.0

7.5%

1,236.8

1,063.0

10%

1,012.5

880.0

 

AFTER-TAX

Acid Plant

Non-Acid Plant

IRR

44.7%

46.1%

Payback (years)

2.4

2.0

NPV (million $)

 

 

Discount Rate

 

 

0%

1,616.1

1,354.9

5%

1,025.8

885.5

7.5%

824.2

720.4

10%

665.2

588.2

 

Total initial capital expenditures for the “Acid Plant” option (including contingency) are estimated at $284.84 million. Sustaining capital, which includes the acid plant built in year three, water treatment facilities and production wellfield are estimated at $598.8million. Net closure costs are estimated at $52.65 million1. For the “Non-Acid Plant” option, total initial capital expenditures (including contingency) are estimated at $284.84 million. Sustaining capital, which includes the water treatment facilities and production wellfield are estimated at $525.2 million. Net closure costs are estimated at $45.2 million2.

The PFS assumes a copper selling price of $2.75/lb. Average life-of-mine operating direct cash costs are estimated at $0.69/lb for the “Acid Plant” option and $0.98/lb for the “Non-Acid Plant” option.

 

Acid Plant

Non-Acid Plant

Copper Cathode sold (MMlb)

1,682

1,682

Copper Price ($/lb)

2.75

2.75

Gross Revenue (million $)

4,625.9

4,625.9

Operating Costs

(million $)

Cost/lb

(million $)

Cost/lb

Production (Wellfield)

447.8

0.27

935.5

0.56

SXEW

360.83

0.21

372.84

0.22

Water Treatment Plant

199.7

0.12

199.7

0.12

G&A

147.3

0.09

147.3

0.09

Direct Operating Cash Costs

1,155.6

0.69

1,655.2

0.98

Royalties

48.3

0.03

48.3

0.03

Other Production Expenses

169.95

0.10

156.46

0.09

Initial Capital Costs

(million $)

Cost/lb

(million $)

Cost/lb

Production (Wellfield)

75.3

0.04

75.3

0.04

SXEW + Infrastructure

186.3

0.11

186.3

0.11

Owners Costs

23.2

0.01

23.2

0.01

Sub-total Initial Capital Costs

284.8

0.17

284.8

0.17

Sustaining Capital Costs

(million $)

Cost/lb

(million $)

Cost/lb

Production (Wellfield)

440.7

0.26

440.7

0.26

Plant + Infrastructure

158.17

0.10

84.68

0.05

Sub-total Sustaining Capital Costs

598.8

0.36

525.2

0.31

Taxes

752.3

0.45

601.1

0.36

 

Noted Variances:

118.3% Increase

26.9% Increase

31.4% Increase

41.4% Increase

55% Increase

61.9% Increase

72.5% Increase

84.5% Increase

 

Project Summary

The Gunnison Copper Project is located in a remote section of Cochise County about 65 miles east of Tucson, Arizona in the Johnson Camp Mining District. The property is within the copper porphyry belt of Arizona.

Technical Report and Qualified Person

The PFS Report was prepared under the supervision of Conrad Huss, P.E. of M3 Engineering & Technology Corporation, Tucson, Arizona, who is a qualified person that is independent of the Company. The Report also received contributions from the following additional qualified persons, who are also independent of the Company:

    • Dr. Ronald J. Roman of Leach, Inc., Tucson, Arizona (metallurgy and leaching recovery).
    • Peter Lenton, P.E. of Haley & Aldrich, Phoenix, Arizona (hydrology, extraction methods, production schedule).
    • Thomas L. Drielick, P.E. of M3 Engineering & Technology Corporation, Tucson, Arizona (SX-EW treatment and related facilities).
    • Mr. Herb Welhener, MMSA-QPM, of IMC of Tucson, Arizona (geology, mineral resource and reserve).

Each of the qualified persons has reviewed and approved the technical information contained in this news release that is relevant to his area of responsibility and verified the data underlying such technical information.

Engagement of Investor Relations Consultant

Excelsior also announces that Liolios Group, Inc. (“Liolios”) has been engaged to support the Company’s investor relations activities.

Terms of Engagement

During the term of the agreement with Liolios, Liolios will collaborate with Company management on a non-exclusive basis to provide services which will include, but not be limited to, the development, implementation and maintenance of an on-going stock market support system aimed at increasing investor awareness of the Company's activities and to stimulate investor awareness in the Company. Liolios will disseminate public information about the Company to key investment professionals and private parties, and as well to Liolios's existing database of business associates and investment professionals in both the United States of America and Canada. In addition to the ongoing communication and introduction of the company to key members of the financial brokerage and investment community, they will conduct periodic conference calls, identify investor conferences which may be of interest to the Company, and arrange group or individual meetings with portfolio managers, analysts, stockbrokers, and other investment professionals.

As compensation for the services provided under the agreement, the Company agrees to pay fees of up to US$8,000 per month to Liolios, and the Company has sufficient cash in its treasury to pay the fees for Liolios services.  The agreement with Liolios shall be automatically renewed on a month to month basis unless either party provides thirty days’ notice of termination to the other party.  The Liolios’ engagement is subject to acceptance by the TSX Venture Exchange.

Liolios is independent of the Company, does not hold any securities of the Company and does not have any direct or indirect interest in the Company. Liolios and it principals do not engage in market making activities and the firm will restrict its services to public relations and investor relations consulting. Liolios will provide its services from its offices located in Newport Beach, New York and Toronto.

About Liolios Group

Liolios Group is a highly selective and comprehensive investor relations firm specializing in micro to mid-cap companies. The firm aims to deliver superior performance in corporate messaging and positioning, investor awareness, analyst and financial press coverage and capital attraction. Founded in 1999 by J. Scott Liolios, Liolios Group executives have extensive experience in financial and investments and represent clients in a wide range of industries, including life sciences/healthcare, consumer/internet retail, business services, digital, media/software, clean technology, technology, natural resources and special situations. For more information about Liolios Group, visit www.liolios.com.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014. 

For more information on Excelsior, please visit our website at www.excelsiormining.com.

 

ON BEHALF OF THE EXCELSIOR BOARD

 

"Stephen Twyerould"

President & CEO

 

 

For further information regarding this press release, please contact:

Excelsior Mining Corp.

Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs

T: 604-681-8030 x240

E: This email address is being protected from spambots. You need JavaScript enabled to view it.

www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of mineral resources and mineral reserves; (ii) the robust economics, potential returns associated with the Gunnison Project, (iii) the technical viability of the Gunnison Project; (iv) the market and future price of copper; (v) expected infrastructure requirements; (vi) the results of the PFS including statements about future production, future operating and capital costs, the projected IRR, NPV, payback period, construction timelines, permit timelines and production timelines for the Gunnison Project, (vii) expected acid consumption rates; and (viii) the ability to mine the Gunnison Project using in-situ recovery mining techniques.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 17, 2014

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce the results of a comprehensive Prefeasibility Study (“PFS”) on the North Star Deposit of the Gunnison Copper Project, located in southern Arizona. The PFS was completed by M3 Engineering & Technology Corporation (“M3”) of Tucson, AZ and is effective as of January 13, 2014. The National Instrument (“NI”) 43-101 compliant Report (the “Report”) summarizing the results of the PFS will be filed on SEDAR and Excelsior’s website within 45 days of this news release. Results of the PFS disclosed in this press release are in USD and pre-tax (except where otherwise indicated).

Highlights of the North Star Gunnison Copper Project PFS “Acid Plant” option include:

  • Pre-tax Net Present Value (“NPV”) of $1.24 billion (after-tax $0.826 billion) at a 7.5% discount rate (using a copper price of $2.75/lb)
  • Pre-tax Internal Rate of Return (“IRR”) of 59.7% (after-tax 44.7%)
  • Pre-tax payback period of 1.8 years (after-tax 2.4 years)
  • Initial estimated capital cost (excluding sustaining capital) of $284.74 million
  • Average life-of-mine operating costs of US$0.68 per pound
  • Other costs of $0.12 per pound, including Royalties of $0.029 per pound
  • Annual production rate of 110 million pounds of copper for the first 14 years, then declining for a 20 year mine life, with a total of 1.682 billion pounds of copper produced over the life of the mine.

“The completion of a positive Prefeasibility Study is a significant de-risking event in Excelsior’s development and we are very pleased with the results. The results surpass the robust economic potential indicated by the 2011 Preliminary Economic Assessment and support copper extraction of the North Star Deposit through in-situ recovery with the potential to generate exceptional financial returns,” says Mark J. Morabito, Chairman of Excelsior. “With initial production expected to commence in Q4 2016 we are looking forward to beginning the next phase of development.”

Commenting on the results, President and CEO, Stephen Twyerould said, “With the completion of this major milestone, the commercial case for the Gunnison Copper Project has grown even stronger. The Prefeasibility Study has confirmed the robust economics and technical viability for what has the potential to be one of the lowest cost copper producers in North America.”

Financial Analysis

As highlighted in the tables below, the PFS demonstrates robust project economics in both the “Acid Plant” and “Non-Acid Plant” scenarios, with the Acid Plant option adding an additional $174.2 million to the project pre-tax NPV. Based on an initial annual production rate of 110 million pounds, the PFS indicates that including an Acid Plant as a component of the project, generates a pre-tax NPV of $1.24 billion, at a cash flow discount rate of 7.5%. The pre-tax IRR for this option is 59.7% with a payback period of 1.8 years. On an after-tax basis, the PFS shows an NPV7.5 of $825.83 million, IRR of 44.7% and a payback period of 2.4 years.

Without an Acid Plant, the project still has a significant pre-tax NPV7.5 of $1.06 billion and an IRR of 61.4%, (after-tax NPV7.5 of $721.41 million and an IRR of 46.1%). The after-tax analysis is based on a number of assumptions which will be fully set out in the Report. The level of accuracy of the PFS is considered to be+/-20%.

Both scenarios used the following parameters over the 20 year life of the project:

  • copper selling price of $2.75 per pound,
  • total copper recovery of approximately 47% (based on a combination of metallurgical recovery and sweep efficiency),
  • average of 8.14 pounds of acid consumed for every pound of copper produced,
  • acid price of $45.70/ton for the Acid Plant option and $125/ton for the Non-Acid Plant option,
  • state tax rate of 6.97%, and
  • a federal tax rate of 35%.
PRE-TAX
Acid Plant
Non-Acid Plant
IRR
59.7%
61.4%
Payback (years)
1.8
1.5
NPV (million $)
 
 
Discount Rate
 
 
0%
2,377.9
1,961.7
5%
1,525.7
1,295.1
7.5%
1,238.6
1,064.3
10%
1,013.4
880.8
 
AFTER-TAX
Acid Plant
Non-Acid Plant
IRR
44.7%
46.1%
Payback (years)
2.4
2.0
NPV (million $)
 
 
Discount Rate
 
 
0%
1,625.4
1,360.0
5%
1,028.8
887.2
7.5%
825.8
721.4
10%
666.0
588.8

Total initial capital expenditures for the “Acid Plant” option (including contingency) are estimated at $284.74 million. Sustaining capital, which includes the acid plant built in year three, water treatment facilities and production wellfield are estimated at $602.4 million. Net closure costs are estimated at $44.5 million. For the “Non-Acid Plant” option, total initial capital expenditures (including contingency) are estimated at $284.74 million. Sustaining capital, which includes the water treatment facilities and production wellfield are estimated at $528.8 million. Net closure costs are estimated at $42.3 million.

The PFS assumes a copper selling price of $2.75/lb. Average life-of-mine operating direct cash costs are estimated at $0.68/lb for the “Acid Plant” option and $0.98/lb for the “Non-Acid Plant” option.

  Acid Plant Non-Acid Plant

Copper Cathode sold (MMlb)

1,682 1,682

Copper Price ($/lb)

2.75 2.75

Gross Revenue (million $)

4,625.9 4,625.9

Operating Costs

(million $) Cost/lb (million $) Cost/lb

Production (Wellfield)

449.3 0.27 935.5 0.56

SXEW

355.7 0.21 367.6 0.22

Water Treatment Plant

198.5 0.12 198.5 0.12

G&A

147.3 0.09 147.3 0.09

Direct Operating Cash Costs

1,150.7 0.68 1,648.8 0.98

Royalties

48.3 0.03 48.3 0.03

Other Production Expenses

161.8 0.09 153.5 0.09

Initial Capital Costs

(million $) Cost/lb (million $) Cost/lb

Production (Wellfield)

75.3 0.04 75.3 0.04

SXEW + Infrastructure

186.3 0.11 186.3 0.11

Owners Costs

23.2 0.01 23.2 0.01

Sub-total Initial Capital Costs

284.7 0.17 284.7 0.17

Sustaining Capital Costs

(million $) Cost/lb (million $) Cost/lb

Production (Wellfield)

440.2 0.26 440.2 0.26

Plant + Infrastructure

162.2 0.10 88.6 0.05

Sub-total Sustaining Capital Costs

602.4 0.36 528.8 0.31

Taxes

752.5 0.45 601.7 0.36

Mineral Resources and Mineral Reserves

Mineral Resource Estimate

The mineral resource estimate for the North Star Deposit is based on results from 88 drill holes totalling 129,272 feet (ft). The estimate is consistent with the CIM definitions referred to in NI 43-101. Mr. Herb Welhener, RM-SME, of Independent Mining Consultants, Inc. (“IMC”) of Tucson, Arizona is a Qualified Person as defined by NI 43-101 and is responsible for reviewing and approving the mineral resource and mineral reserve estimates and the QA/QC associated with the estimates. Mr. Welhener is independent of the Company. He has verified, reviewed and approved the technical disclosure contained in the ‘Mineral Resources and Mineral Reserves’ section of this news release and the underlying sampling, analytical and test data. The mineral resource estimate has been prepared using a 0.05% Total Cu cut-off grade and is effective as of January 13, 2014.

North Star Resources (Oxide and Transition at 0.05% cut-off)

Category

Short Tons (million)

Total Copper %

Pounds of Cu (million)

Measured

158

0.38

1,205

Indicated

525

0.26

2,704

Total M&I

683

0.29

3,909

       

Inferred

338

0.21

1,397

The mineral resource estimate is contained within a block model of the North Star deposit covering a surface area of 3.30 square miles and to a maximum depth of 2,575 feet below the topographic surface. The major geologic formations and oxidization types are incorporated into the block model based on the drill hole intercept data. The total copper grades are estimated using an ordinary kriging estimation technique from 25 ft drill hole composite data. The grade estimate for the sedimentary units uses a 700 ft circular by 50 ft search distance dipping 30 degrees east to parallel the general dip of the sedimentary units. The grade estimation respected the contacts of the various sedimentary units. The 700 ft distance is 70% of the variogram range. The total copper grades in the non-sedimentary units were estimated using a 500 ft spherical search. No copper grades are estimated in the overburden or un-mineralized rock units. Copper grade estimates based on eight or more holes are classified as Measured, grades based on three to seven holes are Indicated and grades based on less than three holes are Inferred.

All samples are prepared from manually split half-core sections on site in Arizona. Split drill core samples are then sent to Skyline Assayers & Laboratories in Tucson, Arizona for Total Copper and Sequential Copper analyses. Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program.

Mineral Reserve Estimate

The PFS mineral reserve is based on an economic analysis of the mineral resource using the costs developed during the 2011 PEA, test work to estimate the recovery factors and a $2.75/lb copper price. The economic optimization was performed on Measured and Indicated Resources. EBIT (earnings before interest and tax) was calculated on a block by block basis based on economic parameters. Consistent blocks (in vertical and horizontal directions) at a cut-off grade of 0.05% total Cu with a positive EBIT values that were greater than the capital cost of drilling and establishing the wells required for each column of blocks were included in the reserve. Total Cu% was selected for the mineral reserve estimate. The mineral reserve was estimated after applying engineering and operational design parameters which removed the thinner and deeper portions of the mineral resource. Internal dilution has been included in the final mineral reserve estimate. IMC is of the opinion that the mineral reserve estimate derived in this PFS reasonably quantifies the economical ore mineralization of the North Star Deposit. The reserve estimate is as of January 13, 2014 and the mineral reserves presented in the table below are included in the mineral resource estimate set out above.

North Star Mineral Reserves (Oxide and Transition at 0.05% cut-off)

Category

Short Tons (million)

Total Copper %

Pounds of Cu (million)

Probable

632

0.29

3,614

Excelsior is not aware of any environmental, permitting, legal, title, taxation, socio-political, marketing or other issues which may materially affect the mineral resource and mineral reserve estimates. The production schedule of the PFS recovers approximately 47% of the mineral reserve.

Project Summary

The Gunnison Copper Project is located in a remote section of Cochise County about 65 miles east of Tucson, Arizona in the Johnson Camp Mining District. The property is within the copper porphyry belt of Arizona. The focus of the project is the North Star deposit, which currently hosts a total Measured and Indicated mineral resource of 3.91 billion pounds of copper (683 M tons at 0.29%) and an Inferred mineral resource of 1.40 billion pounds of copper (338 M tons at 0.21%). The Probable mineral reserves for the North Star Deposit are 3.61 billion pounds of copper (632 M tons at 0.29%). This oxide and transition portion of the mineral reserve has the potential to be mined using in-situ recovery methods.

The proposed project, as stated in the PFS, includes the following components:

  • The North Star copper deposit.
  • The Wellfield including injection, recovery, observation and perimeter wells and related infrastructure.
  • The acid plant, including sulfur and sulfuric acid handling and cogeneration plant.
  • Processing infrastructure including a Solvent Extraction/Electrowinning (“SXEW”) Plant and pipe corridors.
  • Water treatment facility and facility ponds.
  • Ancillary infrastructure to support the mine and process plant (electrical substation, administration/office buildings and transmission lines).>
  • The rail infrastructure and rail car storage.

The proposed project will produce 110 million pounds of copper per year for the first 14 years, then declining to year 20. Processing will take place at the Gunnison site and will involve solvent extraction and electrowinning to produce pure copper cathode sheets.

Technical Report and Qualified Person

An NI 43-101 Technical Report will be filed on SEDAR and on Excelsior’s website within 45 days of the date of this news release. The Report will consist of a summary of the Prefeasibility Study. The Report is being prepared under the supervision of Conrad Huss, P.E. of M3 Engineering & Technology Corporation, Tucson, Arizona, who is a qualified person that is independent of the Company. The Report will also receive contributions from the following additional qualified persons, who are also independent of the Company:

  • Dr. Ronald J. Roman of Leach, Inc., Tucson, Arizona (metallurgy and leaching recovery).
  • Peter Lenton, P.E. of Haley & Aldrich, Phoenix, Arizona (hydrology, extraction methods, production schedule).
  • Peter Lemke, P.E. of Golder Associates Inc., Lakewood, Colorado (water treatment and related facilities).
  • Mr. Herb Welhener, RM-SME, of IMC of Tucson, Arizona (geology, mineral resource and reserve).


Each of the qualified persons has reviewed and approved the technical information contained in this news release that is relevant to his area of responsibility and verified the data underlying such technical information.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

Prior to the release of the Report on the PFS results, additional information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project Preliminary Economic Assessment, NI 43-101 Technical Report” dated November 18, 2011.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"

President & CEO

For further information regarding this press release, please contact:

Excelsior Mining Corp.
Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com 

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the estimation of mineral resources and mineral reserves; (ii) the robust economics, potential returns associated with the Gunnison Project, (iii) the technical viability of the Gunnison Project; (iv) the market and future price of copper; (v) expected infrastructure requirements; (vi) the results of the PFS including statements about future production, future operating and capital costs, the projected IRR, NPV, payback period, construction timelines, permit timelines and production timelines for the Kami Property, (vii) expected acid consumption rates; and (viii) the ability to mine the Gunnison Project using in-situ recovery mining techniques.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 14, 2014            

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the“Company”) is pleased to announce the appointment of Sonya Atwal, CGA as Chief Financial Officer of the Company, effective immediately. Ms. Atwal is a Certified General Accountant and has over nine years of accounting experience. She previously served as Chief Financial Officer of Excelsior from 2007 to 2011 and as Corporate Secretary from 2009 to 2010. She has also acted as Chief Financial Officer and Controller with numerous other public and private companies. Ms. Atwal also holds a BBA degree from the Southern Alberta Institute of Technology (SAIT) in Accounting and Information Technology.

The board of directors of the Company wish to thank Samuel Yik for his contributions to the Company during his tenure as Chief Financial Officer.


About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.


ON BEHALF OF THE EXCELSIOR BOARD


"Stephen Twyerould"

President & CEO

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com


Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Dear Fellow Investors,

With the copper spot price teetering at just above $2, you might be skeptical hearing a mining executive talking about how great things are, but the fact is 2015 was by far the most productive year in Excelsior’s  history. From the successful completion of our feasibility-level work program, through to the recent acquisition of the Johnson Camp Mine with the concurrent financing, it was a noteworthy year. What makes this even more remarkable is that we accomplished all of this within the context of one of the most challenging mining environments in recent memory. Not intent on simply surviving; we have continued to move forward quickly.

Some of the more significant milestones for the year included:

  • Exercise of the option to acquire 100% of the Gunnison Copper Project;
  • Successful completion of feasibility level field programs, including resource drilling, metallurgy, hydrology and base-line studies;
  • Upgrading of the North Star resource;
  • Completion of detailed hydrological modelling in support of permitting and mine design; and,
  • Acquisition of the nearby Johnson Camp Mine with a concurrent US$12 million financing.

The acquisition of the Johnson Camp Mine (“JCM”) is significant for several reasons. The existing facilities and the solvent extraction and electro winning (SX-EW) plant are valuable assets. We remain absolutely confident in our ability to successfully process copper solutions through the SX-EW plant at JCM, which is expected to significantly reduce both our initial capital requirements and the time required for the start-up of the Gunnison Copper Project. By combining industry leading low operating and low capital costs with an environmentally friendly mining project, we further differentiate ourselves from our peers.  

The JCM acquisition included a US$12 million financing that demonstrates our continued ability to access funds in these challenging economic times.  Of note, US$8 million of this was in the form of a non-dilutive royalty offering, demonstrating our focus on shareholder value. With the extensive and all-encompassing due diligence reviews involved in this type of financing, we again have received a major endorsement of the quality of our management team and the Gunnison Copper Project.

Looking forward, we are excited to show the positive financial effects of the JCM acquisition by releasing, early in 2016, a major update to our prefeasibility study. This will go hand-in-hand with the submittal of our main in-situ recovery operating permits – the Arizona State Aquifer Protection Permit and the Federal Underground Injection Control Permit. Both are significant milestones and market catalysts.

Later in 2016 we expect to complete the full feasibility study on the combined project, delivering yet another major catalyst to the market.

The only thing missing from an otherwise exceptional year is a higher share price. By staying virtually flat, Excelsior will be one of, if not the, top performing copper development company for 2015 on the TSX-V. I’m fully aware this is still not good enough. I have always maintained that a technical success is nothing if it does not coincide with a market success. Without a doubt we have created substantially more value during the past few years than the softening copper price has taken away, and we are clearly doing a good job of navigating through these troubled markets.  I believe the stability of our current share price is a reflection of the quality of our project and the capacity of our management team to deliver.

Finally, I truly appreciate those of you who have continued to support Excelsior as we grow to be one of the most cost effective and environmentally friendly copper mines in the world. Excelsior has never looked better and our path to low-cost production has never been clearer. We enter 2016 with confidence and optimism, knowing the light at the end of the tunnel is nearer and we are poised to capitalize on all the outstanding work we have done to date. Thank you for your support.   

Kind Regards,

Stephen Twyerould
President & CEO
Excelsior Mining Corporation

About Excelsior
Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this letter.
For more information on Excelsior, please visit our website at www.excelsiormining.com.

Cautionary Note Regarding Forward-Looking Information

This letter contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this letter includes, but is not limited to, statements with respect to (i) the use of the SX-EW plant at Johnson Camp, (ii) the potential reduction in the initial capital costs and the timeline to first production at the Gunnison Project, (iii) the timeline to complete a prefeasibility study and feasibility study, (iv) the timeline to submit permit applications, (v) expected low cost production; and (vi) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this letter is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the ongoing care and maintenance costs associated with Johnson Camp, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this letter. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

December 16, 2015 (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF)

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”)announces that it has granted incentive stock options to purchase a total of 4,600,000 common shares of Excelsior at an exercise price of $0.23 per share to certain directors, officers, and consultants of Excelsior. The options have a term of five years.

The Company also announces that, subject to TSX Venture Exchange approval, it has approved the extension of to the term of a total of 3,891,333 stock options (the "Options"), which are currently scheduled to expire in 2016 and 2017. The Options were issued with an original term of five years and the term will be extended such that their new expiry date is December 31, 2018. All of the Options have an exercise price that is greater than the current market price.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the ongoing care and maintenance costs associated with Johnson Camp, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

December 15, 2015  (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF)

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that it, through a wholly-owned Arizona subsidiary, has closed the acquisition of all of the assets of Nord Resources Corporation, as they relate to the Johnson Camp Copper Mine (the “Johnson Camp Transaction”). The Johnson Camp Copper Mine (“JCM”) is located immediately adjacent to Excelsior’s Gunnison Copper Project in southeastern Arizona (the “Gunnison Project”). The Company also announces that it has closed concurrent financings of US$12.0 million. For details of the Johnson Camp Transaction, please see Excelsior’s news release dated October 8, 2015 – Excelsior to Purchase Johnson Camp Mine and Raise US$12 Million.

Commenting on the closing of the Johnson Camp Transaction, Stephen Twyerould, President and CEO of the Company, said, “The acquisition of the production facilities at Johnson Camp Mine puts Excelsior in an excellent position and represents the delivery of yet another impressive milestone. We remain absolutely confident in our ability to successfully process copper solutions through the existing SX-EW plant, which is expected to significantly reduce both our initial capital requirements and the time required for the start-up of the Gunnison Copper Project. Based on this acquisition, Excelsior intends to provide an updated prefeasibility study in Q1 of 2016, and the feasibility study is scheduled to be completely before the end of 2016.”

Concurrent Financing

Excelsior has also closed concurrent financings with an affiliate of Greenstone Resources L.P. (“Greenstone”), for total gross proceeds of US$12.0 million. The financings consists of a private placement of common shares (the “Private Placement”) for gross proceeds of US$4 million over two tranches and the sale of 2% gross revenue royalty on the Gunnison Copper Project (the “Royalty Financing”) for gross proceeds of US$8 million.

Stephen Twyerould added, “Our ability to complete a significant and largely non-dilutive financing in one of the most challenging environments for junior mining companies is a testament to the quality of the Gunnison Copper Project and our management team. Following upon an exhaustive review of the data from our feasibility work programs, the Greenstone financing represents a major endorsement and allows for the project to maintain its pace and momentum as we head into 2016.”

With respect to the Private Placement, on November 30, 2015 the Company closed the first tranche of the Private Placement (“Tranche 1”) through the issuance of 8,655,510 common shares to Greenstone for total gross proceeds of US$1.5 million. Please see Excelsior’s news release dated December 1, 2015 – Excelsior Announces Closing of First Tranche of Greenstone Financing.

The Company has now closed the second tranche of the Private Placement (“Tranche 2”) pursuant to which Greenstone has purchased, by way of a treasury offering, common shares of Excelsior at a price of Cdn$0.23 per common share for total gross proceeds of US$2.5 million. Settlement occurred in United States dollars and the exact number of common shares issued has been determined based on a Cdn$/US$ exchange rate of Cdn$1.00 being equal to US$0.7533 (the “Exchange Rate”). The Exchange Rate was determined using the average of the noon Cdn$/US$ exchange rate, as reported by the Bank of Canada, for the 10 days prior to the execution of the term sheet. Greenstone has acquired 14,425,852 common shares, which represent approximately 10.42% of Excelsior’s issued and outstanding common shares.  

As result of the closing of Tranche 1 and Tranche 2 of the Private Placement, Greenstone now holds a total of 55,550,869 common shares, which represents approximately 40.14% of Excelsior’s issued and outstanding common shares. The common shares issued to Greenstone pursuant to Tranche 2 are subject to a statutory four month hold period expiring on April 15, 2016. In addition Greenstone has agreed that it will not, for a period of one year, dispose of the common shares it acquired pursuant to the Private Placement.

The net proceeds of the Private Placement and Royalty Financing will be used for the consideration payable in the Johnson Camp Transaction, the continued development of the company's Gunnison Copper Project and for working capital and general corporate purposes.

The securities being offered hereby have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state or province in which such offer, solicitation or sale would be unlawful.

About Greenstone

Greenstone is a private equity fund specialising in the mining and metals sector. The Greenstone team has over 80 years of experience in the sector covering all aspects of mining project development. Further details on Greenstone can be found at www.greenstoneresources.com.

Greenstone is acquiring the securities in the offering described herein for investment purposes. Depending on market conditions and other factors, Greenstone may from time to time acquire and/or dispose of securities of Excelsior or continue to hold its current position.

A copy of the early warning report required to be filed with the applicable securities commission in connection with the transaction will be available on SEDAR at www.sedar.com and can be obtained by contacting Jo-Anna Duquemin Nicolle and Sadie Morrisson at +44 1481810100. Greenstone's address is set out below.
Greenstone Contact Information:

Greenstone Resources L.P.
1st Floor, Royal Chambers
St Julian's Avenue
St Peter Port, Guernsey
GY1 3JX
Channel Islands

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD
"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the use of the SX-EW plant at Johnson Camp, (ii) the potential reduction in the initial capital costs and the timeline to first production at the Gunnison Project, (iii) the timeline to complete a prefeasibility study and feasibility study, (iv) the anticipated use of proceeds of the financings; and (v) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the ongoing care and maintenance costs associated with Johnson Camp, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

December 1, 2015  (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF)

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce the closing of the first tranche of the US$12 million financing (the “Greenstone Financing”) that is being conducted in connection with the acquisition of the assets of Nord Resources Corporation, as they relate to the Johnson Camp Copper Mine (the “Johnson Camp Transaction”). An affiliate of Greenstone Resources L.P. (“Greenstone”) has purchased 8,655,510 common shares (the “Purchased Shares”) at a price of US$0.1733 (Cdn$0.23) per common share in return for gross proceeds of US$1.5 million. For further information please see the Company’s previous news release dated October 8, 2015 – “Excelsior to Purchase Johnson Camp Mine and Raise US$12 Million”.

The Purchased Shares represent approximately 6.98% of Excelsior’s issued and outstanding common shares. As a result of the closing of the first tranche of the Greenstone Financing, Greenstone holds a total of 41,125,017 common shares, which represents approximately 33.17% of Excelsior’s issued and outstanding common shares. The common shares issued to Greenstone are subject to a statutory four month hold period expiring on April 1, 2016. In addition Greenstone has agreed that it will not, for a period of one year, dispose of the common shares it acquires pursuant to the Private Placement except in limited circumstances.

The net proceeds of the first tranche of the Greenstone Financing will be used for the consideration payable in the Johnson Camp Transaction and for working capital and general corporate purposes.

The second tranche of the Greenstone Financing is expected to be completed concurrently with the closing of the Johnson Camp Transaction. The second tranche of the Greenstone Financing consists of a private placement of common shares for gross proceeds of US$2.5 million and the sale of 2% gross revenue royalty on the Gunnison Project for gross proceeds of US$8 million. The Company obtained shareholder approval for the Greenstone Financing at an extraordinary meeting of shareholders held on November 17, 2015. The Company is working to satisfy all of the outstanding closing conditions associated with the second tranche of the Greenstone Financing and Johnson Camp Transaction. Assuming all closing conditions are satisfied, the Company intends to concurrently close both the second tranche of the Greenstone Financing and Johnson Camp Transaction during the first half of December 2015.

The securities being offered hereby have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state or province in which such offer, solicitation or sale would be unlawful.

About Greenstone

Greenstone is a private equity fund specialising in the mining and metals sector. The Greenstone team has over 80 years of experience in the sector covering all aspects of mining project development. Further details on Greenstone can be found at www.greenstoneresources.com.

Greenstone is acquiring the securities in the offering described herein for investment purposes. Depending on market conditions and other factors, Greenstone may from time to time acquire and/or dispose of securities of Excelsior or continue to hold its current position.

A copy of the early warning report required to be filed with the applicable securities commission in connection with the transaction will be available on SEDAR at www.sedar.com and can be obtained by contacting Jo-Anna Duquemin Nicolle and Sadie Morrisson at +44 1481810100. Greenstone's address is set out below.

Greenstone Contact Information:

Greenstone Resources L.P.
1st Floor, Royal Chambers
St Julian's Avenue
St Peter Port, Guernsey
GY1 3JX
Channel Islands

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the closing of the second tranche of the Greenstone Financing and the Johnson Camp Transaction, (ii) the anticipated use of proceeds of the financings; and (iii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the ongoing care and maintenance costs associated with Johnson Camp, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

November 17, 2015                                                  (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF)

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that during its Extraordinary Meeting of Shareholders (“EGM”) that took place on November 17, 2015, shareholders unanimously approved a resolution permitting the Company to proceed with a US$12 million financing (the “Greenstone Financing”) with an affiliate of Greenstone Resources L.P. (“Greenstone”). The financing with Greenstone is being conducted concurrently with the acquisition of the Johnson Camp mine and related assets (the “Johnson Camp Transaction”). For further information on the Greenstone Financing and Johnson Camp Transaction, see Excelsior News Release dated October 8, 2015 – Excelsior to Purchase Johnson Camp Mine and Raise $US12 Million.

The Company is working to satisfy all of the outstanding closing conditions associated with the Greenstone Financing and Johnson Camp Transaction. Assuming all closing conditions are satisfied, the Company intends to concurrently close both the Greenstone Financing and Johnson Camp Transaction during the first half of December 2015.

About Excelsior
Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details and timelines associated with the Greenstone Financing and Johnson Camp Transaction, (ii) and (vii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the ongoing care and maintenance costs associated with Johnson Camp, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES
October 8, 2015                                                     (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF)

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that it, through a wholly-owned Arizona subsidiary, has entered into a definitive Asset Purchase Agreement (the “Purchase Agreement”) to acquire all of the assets of Nord Resources Corporation (“Nord”), as they relate to the Johnson Camp Copper Mine (the “Johnson Camp Transaction”). The Johnson Camp Copper Mine (“Johnson Camp”) is located immediately adjacent to Excelsior’s Gunnison Copper Project in southeastern Arizona (the “Gunnison Project”). The Company also announces that it has entered into a binding term sheet for a concurrent financing of US$12 million.

Details of the Johnson Camp Transaction

Under the terms of the Purchase Agreement, Excelsior will acquire, through the court-appointed receiver (the “Receiver”), the Johnson Camp Mine including all fee title property, all patented and unpatented mining claims, all improvements, equipment, certificates of deposit, reports and records. Subject to court approval all assets will be transferred to Excelsior free and clear of all liens, and all back-taxes are to be paid by the Receiver from the proceeds of sale. Excelsior will acquire Nord’s Johnson Camp assets for total consideration of US$8.4 million under the following terms: 

  • US$5.2 million due on or prior to closing;
  • US$1 million due on or before December 31, 2016; and
  • US$2.2 million due on or before December 31, 2017.

Johnson Camp mining claims are contiguous with Excelsior’s Gunnison Project. The property consists of 59 patented lode mining claims, 117 unpatented lode mining claims and fee simple lands. The existing facilities includes a 4500 gallon per minute solvent extraction plant, a tank farm, an electrowinning plant with 88 electrowinning cells with capacity of 25 million pounds of copper cathode per annum, solution storage ponds, a truck shop, core storage building, offices, warehouse, laboratory, mechanical shop, a primary and secondary crusher, and various other equipment. Johnson Camp stopped mining operations in 2010 and has since been producing small amounts of copper from residual leach pads. The mine has been in receivership since 2014.

The closing of the Johnson Camp Transaction is subject to several conditions including the receipt of a final and non-appealable order from the Superior Court of Arizona, receipt of all consents required for the transaction, all non-permitted liens on the assets being discharged (subject to court approval) and the receipt of all regulatory approvals, including the approval of the TSX Venture Exchange. Closing is expected to occur in late November 2015.

Commenting on the Johnson Camp Transaction, Stephen Twyerould, President and CEO of the Company, said, “This is an exciting development for the Company. The SX-EW plant at Johnson Camp is in good working order, and once our Gunnison Project to the south is permitted and ready for production, we expect that the copper solutions can be easily processed through the existing Johnson Camp facilities.  This is expected to allow us to significantly reduce our upfront capital requirements and the time required for the start-up of the Gunnison Project.  The Company also intends to thoroughly examine the potential of Johnson Camp, especially since this is the first time in its 130 year history that the entire Johnson Camp district has been consolidated under one ownership.”

Concurrent Financing

Excelsior also announces it has entered into a binding term sheet for a concurrent financing, with an affiliate of Greenstone Resources L.P. (“Greenstone”), for total gross proceeds of US$12.0 million. The financing consists of a private placement of common shares (the “Private Placement”) for gross proceeds of US$4 million and the sale of 2% gross revenue royalty on the Gunnison Project (the “Royalty Financing”) for gross proceeds of US$8 million.

The Private Placement and Royalty Financing shall require shareholder approval under the rules and policies of the TSX Venture Exchange and applicable Canadian securities laws. The Company intends to obtain shareholder approval for the Private Placement and Royalty Financing at a special meeting of shareholders that is scheduled to occur in November, 2015, in Vancouver (the “Meeting”). Assuming shareholder approval is obtained and other conditions precedent to the Private Placement and Royalty Financing are met (including certain conditions relating to the Johnson Camp Transaction), the Private Placement and Royalty Financing are scheduled to close shortly after the Meeting.

Pursuant to the Private Placement Greenstone will purchase, by way of a treasury offering, common shares of Excelsior at a price of Cdn$0.23 per common share for total gross proceeds of US$4.0 million. Settlement will occur in United States dollars and the exact number of common shares issued has been determined based on a Cdn$/US$ exchange rate of Cdn$1.00 being equal to US$0.7533 (the “Exchange Rate”). The Exchange Rate was determined using the average of the noon Cdn$/US$ exchange rate, as reported by the Bank of Canada, for the 10 days prior to the execution of the term sheet. Based on the Exchange Rate, upon closing of the Private Placement, Greenstone will acquire 23,081,362 common shares (representing approximately 20.01% of Excelsior’s current issued and outstanding common shares). After the closing of the Private Placement Greenstone will hold a total of 55,550,869 common shares, which will represent approximately 40.14% of Excelsior’s issued and outstanding common shares (post-closing of the Private Placement).  Greenstone has agreed that it will not, for a period of one year, dispose of the common shares it acquires pursuant to the Private Placement.

Pursuant to Multilateral Instrument 61-101 - Protection of Minority Security Holders in Special Transactions ("MI 61-101"), each of the Private Placement and Royalty Financing constitutes a "related party transaction" as Greenstone is a related party of the Company. The Company is relying on an exemption from the formal valuation requirement of MI 61-101, based on the fact that the securities of the Company are only listed on the TSX Venture Exchange.  However, the Company will be required to obtain minority shareholder approval for the Private Placement and Royalty Financing as there are no available exemptions. The Company intends to obtain such minority shareholder approval at the Meeting. The common shares that will be acquired by Greenstone will be acquired pursuant to an exemption from the prospectus requirement in section 2.3 of National Instrument 45-106.

The directors of Excelsior who hold shares of the Corporation have entered into irrevocable undertakings pursuant to which they have agreed that they will vote their shares in favour of the Private Placement and Royalty Financing at the Meeting.

Concurrent with the Private Placement and Royalty Financing, the Company will conduct a non-brokered private placement of common shares at a price of Cdn$0.23 per common share, for gross proceeds of up to US$3 million (the “Additional Private Placement”). The Additional Private Placement will also be settled in United States dollars using the Exchange Rate for the purposes of conversion. As a result, up to 17,311,022 common shares will be issued in the Additional Private Placement. If the Additional Private Placement is completed for the full US$3 million, when combined with the Private Placement and Royalty Financing, the Company will have raised total gross proceeds of US$15 million.

The net proceeds of the Private Placement, Royalty Financing and Additional Private Placement will be used for the consideration payable in the Johnson Camp Transaction, the continued development of the company's Gunnison Copper Project and for working capital and general corporate purposes.

The Private Placement, Royalty Financing and Additional Private Placement are subject to a number of conditions, including, without limitation, the execution of definitive documentation, receipt of all regulatory approvals, including the approval of the TSX Venture Exchange and the applicable securities regulatory authorities. The Private Placement and Royalty financing are also subject to the receipt of minority shareholder approval.

The securities being offered hereby have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States or to, or for the account or benefit of, U.S. persons absent registration or an applicable exemption from the registration requirements. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any state or province in which such offer, solicitation or sale would be unlawful.

Callinan Royalty Option Update

Excelsior is also providing an update with respect to the Share Purchase and Royalty Option Agreement dated July 10, 2013 (the “Callinan Agreement”) between Excelsior and Callinan Royalties Corp. (“Callinan”). Excelsior provided notice to Callinan, now a wholly-owned subsidiary of Altius Minerals Corporation (“Altius”), that the milestones for the second royalty option under the Agreement had been achieved. Altius, on behalf of Callinan, has provided notice that it will not be exercising the second royalty option. For additional details of the Callinan Agreement, see Excelsior news release dated July 29, 2014 – Callinan Royalties Corp. Exercises $3 Million Royalty Option.

In May 2015, Altius completed a plan of arrangement whereby Altius acquired all of the issued and outstanding common shares of Callinan and Callinan became a wholly owned subsidiary controlled by the Board and management of Altius. The business model of Altius is to acquire royalty interests in producing mines and to generate its own projects that it then advances through various partner-funding arrangements. Excelsior’s Gunnison Project is not yet a producing mine and it is not a project that was generated initially by Altius, and as a result it falls outside of the current Altius business model. Altius, through Callinan, continues to hold a 1% GRR in the Gunnison Project and holds the remaining options to acquire up to an addition 1.75% GRR based on the remaining Development Milestone (0.5% GRR) and Construction Milestone (0.75% GRR). Altius has not indicated its intention with respect to the exercise of the remaining royalty options.

About Greenstone

Greenstone is a private equity fund specialising in the mining and metals sector. The Greenstone team has over 80 years of experience in the sector covering all aspects of mining project development. Further details on Greenstone can be found at www.greenstoneresources.com.

Greenstone is acquiring the securities in the offering described herein for investment purposes. Depending on market conditions and other factors, Greenstone may from time to time acquire and/or dispose of securities of Excelsior or continue to hold its current position.

A copy of the early warning report required to be filed with the applicable securities commission in connection with the transaction will be available on SEDAR at www.sedar.comand can be obtained by contacting Jo-Anna Duquemin Nicolle and Sadie Morrisson at +44 1481810100. Greenstone's address is set out below.
Greenstone Contact Information:

Greenstone Resources L.P.
1st Floor, Royal Chambers
St Julian's Avenue
St Peter Port, Guernsey
GY1 3JX
Channel Islands

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details and timelines associated with the Johnson Camp Transaction, (ii) the use of the SX-EW plant at Johnson Camp, (iii) the potential reduction in the initial capital costs and the timeline to first production at the Gunnison Project;  (iv) the details of the financings with Greenstone and the Additional Private Placement; (v) the timing and closing of the financings; (vi) the anticipated use of proceeds of the financings; and (vii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the ongoing care and maintenance costs associated with Johnson Camp, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, that definitive agreements for the financing will be concluded, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that the nominees listed in the management information circular of the 2015 Annual General Meeting (“AGM”) of shareholders were elected as directors of Excelsior. Shareholders at the Annual General Meeting also approved the appointment of Excelsior’s auditors. In addition, the Company has granted a total of 200,000 stock options to purchase common shares, to an officer and a consultant, at a price of $0.30 per share for a period of five years.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.   For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD
"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to the advancement of the Gunnison Project. Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce comprehensive hydrological results for the Gunnison Copper Project in Arizona (“Gunnison Project”). The results generated hydrological conductivities in the range expected for typical fracture controlled deposits and show the deposit is suitable for in-situ recovery (“ISR”) operations. These results will be incorporated into a full Feasibility Study scheduled for completion in 2016.

Commenting on these results, President and CEO Stephen Twyerould said, “The successful completion of the hydrology test program is a major milestone in the advancement of our Gunnison Copper Project.  The favourable results once again demonstrate the potential to extract this significant deposit using economically superior and environmentally friendly in-situ mining.”

A total of 32 hydrology wells were laid out over the North Star deposit of the Gunnison Project and its surroundings. These wells targeted a variety of fractured zones, rock types and mineralized areas.  Twenty-seven of the 32 wells were hydraulically tested and the remaining five served as observation wells.  An additional 21 core holes from previous drilling programs were used as water level observations to provide a radial distribution of observation bores to each of the tested wells.

Pump Rates

Hydraulic properties and sustainable pumping rates for individual formations and structures were quantified by assessing the connectivity between pumping wells and observation wells. A pump rate is considered sustainable when at least 50% of the available drawdown is achieved at the end of the total test duration, which typically lasts for five days. Available drawdown is defined as the well bore interval between pump intake and the pre-test level of the water table. Sustainable pump rates of up to 170 gallons per minute (gpm) were observed; these results demonstrate favourable flow rates for potential in-situ copper recovery operations.  

Hydraulic Conductivity

Drawdown response analysis is the quantification of the hydraulic conductivity and is a measure of the efficiency with which water moves through the rock. Hydraulic conductivity (K) is measured in units of length over time, and is represented as feet per day (ft/d). Previous pump tests (pre-2014) conducted by Excelsior produced hydraulic conductivities that ranged from 0.17 ft/day to 4.9 ft/day. These test results were incorporated into the 2014 Prefeasibility Study. Table 1 shows the combined data from all tests, together with the tested depth and span of the hydraulic interval (D).

Table 1 Summary of Hydraulic Testing Results

Hydrology Well K (feet / day) Hydraulic Interval (ft) D (ft)
NSH -001 0.3 702 – 1096 394
NSH -002 4.5 608 – 1264 656
NSH -003 0.2 1216 – 1400 184
NSH -004B 0.5 695 – 1031 336
NSH -005 5.0 647 – 1020 373
NSH -0061 45.0 640 – 681 41
NSH -007 0.4 469 – 620 151
NSH -008 0.4 700 – 847 147
NSH -009 0.01 785 – 1018 233
NSH -010 0.1 555 – 720 165
NSH -011 0.2 470 – 545 75
NSH -013 0.9 656 – 1070 414
NSH -014B2 0.02 1160 – 1274 114
NSH -015 4.6 600 – 820 220
NSH -016 3.1 580 – 820 240
NSH -017 5.8 919 – 1200 281
NSH -018 9.3 591 – 992 401
NSH -019 4.8 638 – 1300 662
NSH -020 2.0 1110 – 1582 472
NSH -021C 0.5 624 – 1372 748
NSH -022 0.1 919 – 1131 212
NSH -023 0.4 645 – 1442 792
NSH -024 0.2 625 – 1440 815
NSH -025 0.05 1461 – 1590 129
NSH -026 0.3 625 – 900 275
NSH -027 0.6 840 – 1010 170
NSH -028 0.2 572 – 800 228
1 Alluvium
2 NSH -014B tested the non-mineralized zone beneath the deposit.

Drawdown analyses from the majority of the wells indicate confined flow conditions and rapid initial response, which are characteristic of fractured bedrock aquifers. When fracture flow was identified, appropriate analysis verified that fracturing was sufficiently frequent such that modeling with an equivalent porous medium model was justified. 

Hydrology Model

A regional groundwater model has been constructed that is capable of modeling and predicting local and regional groundwater flow during simulations of various in-situ recovery scenarios sufficient to support production modeling at the feasibility level. The model has been successfully calibrated by comparison of measured and predicted groundwater levels. Results validate that the deposit is amenable to in-situ mining.

The model is necessary in the permitting phase to demonstrate understanding and control of groundwater flow at the site and to quantify the potential volumes of mine-affected water. It is also being used to develop preliminary designs of the hydraulic interaction between extraction and delivery wells for different configurations and well spacing.  In-situ recovery mining relies on flow between a delivery well and the neighboring extraction wells.  This flow is controlled by the hydraulic conductivity between the delivery and the extraction point, and by the hydraulic gradient.  The gradient can be controlled by means of delivery and extraction rates which create a pressure head (“mounding”) in the delivery well and a cone of depression at the recovery well.  Modelling has shown that flow rates necessary for in-situ mining and hydraulic control are fully supported by the hydraulic conductivities shown in Table 1. 

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

Mr. R. Douglas Bartlett, RG, CPG, CHG, a Principal Hydrogeologist with Clear Creek Associates and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release. Mr. Bartlett has verified the data underlying the test results by approving the test procedure, obtaining all the analytical data over the life of the experiment, and performing the calculations presented above.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman
 

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
 

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details of the mineral resource estimate; (i) the use of in-situ recovery to mine the Gunnison Project; (ii) in-situ recovery mining being economically superior and environmentally friendly; (iii) expected future hydrological conditions of the Gunnison Project based on the test results; (iv) the completion of a Feasibility Study; and (v) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the accuracy of the test results and that they are indicative of full scale mining at the Gunnison Project, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce final metallurgical results for the Gunnison Copper Project in Arizona. These comprehensive results will be incorporated into a full Feasibility Study scheduled for completion in 2016.

The final results from ten fracture simulation box tests can be found in Table 1 below. Results indicate that copper leaches rapidly and relatively uniformly across all rock types. 

Forward modelling of the recovery time curves and acid consumption curves (see graphs) indicate average acid consumption at 100% acid soluble copper recovery (approximately 70% total copper recovery), would be in the range of 8 to 10 pounds of acid consumed for every pound of copper cathode produced. This is consistent with the previously reported Prefeasibility Study that used approximately 8.1 pounds of acid consumed for every pound of copper cathode produced. 

Commenting on these results, Stephen Twyerould, President and C.E.O. said, “These results are completely in-line with the results from our 2014 Prefeasibility Study and fully support the industry leading economics that define our Gunnison Copper Project. We remain excited by the rapid advancement of the Project and the use of this new data in our upcoming Feasibility Study.”

The fracture simulation leach tests were designed to simulate the leaching of copper from a fracture surface as would occur during in-situ recovery operations at the Gunnison Copper Project. Natural, mineralized, fracture surfaces were taken from drill core representing the major rock and mineralization types found in the deposit.  Samples were then embedded in acid resistant epoxy such that all un-natural surfaces of the core were covered by epoxy and the natural, mineralized, fracture surfaces were left exposed to the leach solution.  The samples were placed in an approximately 9 foot long by 10 inch wide clear Perspex box with the un-coated mineralized fracture surfaces facing upwards, and the rest of the sample surrounded by epoxy, thereby restricting the leaching process to the fracture surfaces. A clear Perspex lid was placed on top of each box with minimal void space between the lid and the fracture surface. Mature raffinate, at 15 grams per litre acid concentration, was delivered at one end of the box, fully saturating the core, and moving across the fracture surface in a controlled manner, thereby producing copper-rich leach solution that was collected and sampled at the other end of the box. For further information, please see the Company’s previous news release dated May 20, 2015 – “Excelsior’s Preliminary Metallurgical Tests Fully Consistent with Prefeasibility Results

Table 1: Final results from fracture simulation leach testing.

Ore Core Tray At 116 days** At 166 to 197 days***
Recovery* % Acid Consumption (lbs/lb Cu)

Recovery*

%

Acid Consumption (lbs/lb Cu)
Lower Abrigo 1 73.1 5.7 83.1 6.2
10 72.7 5.2    
Middle Abrigo 6 63.3 5.8    
9 63.8 7.0    
Upper Abrigo 2 71.8 3.6 82.7 4.4
5 70.7 9.9    
Martin 3 59.8 5.3 73.7 6.0
4 65.1 13.5    
7 66.3 9.9    
8 62.7 3.6    

 

*        The recovery percentage is expressed as the percentage of leachable copper, which includes typical acid soluble minerals as well as slow leaching oxides and transitional sulfides.
**       Leaching of core trays 4 to 10 was terminated at 116 days after sufficient data had been obtained.
***     Leaching of core trays 1, 2 and 3 was terminated at 199, 166 and 197 days respectively.
 
 

These core tray results, along with previous study results, will be used in future numerical modelling designed to simulate in-situ recovery and further evaluate operational copper recovery and acid consumption under different well field and operational conditions. The metallurgical recovery and acid consumption described in this press release do not include estimates of well field efficiency (“sweep efficiency”) and other operational conditions, which are expected to reduce total mining recovery to approximately 45% to 50% of total copper.

Column Leach Tests

Additionally, 19 column leach tests were completed in order to investigate geological variability. Copper recoveries were quick and overall results remained consistentwith previous column leach tests.  Because the goal of these tests was to leach only long enough to establish trends, all of the column leach tests ran for a very short duration of approximately 60 days. This deliberately short time period resulted in observed acid soluble recoveries of between 60% and 80%. Had the leach cycle been longer, 100% recovery of acid soluble copper could be expected. Because column leach testing requires the sample rock to be crushed, these tests are not appropriate for providing data on acid consumption.

Of greatest significance, substantial copper recoveries were recorded from slow leaching oxides and transitional sulphides that do not report to the acid soluble assay. This “insoluble copper” has the potential to improve upon total recoveries during commercial production.

The column leach test results can be viewed here – LINK TO TABLE. Columns 6B and 3 are not included because residual assays have not yet been returned. 

Metallurgical testing is being conducted by the independent laboratory, "Mineral Advisory Group, Research & Development, LLC", ("MAG R&D")  of Tucson, Arizona under the supervision of Dr. Ronald J. Roman, an independent consultant who is a Qualified Person as defined by National Instrument 43-101.  Dr. Roman has reviewed and approved the technical information disclosed in this news release. Dr. Roman has verified the data underlying the test results by designing the test procedure, supervising the test work, obtaining all the analytical data over the life of the experiment and performing the calculations presented above.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.

www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) acid consumption and copper recoveries; (ii) the preparation of a feasibility study; and (iii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, future recovery assumptions, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce an updated mineral resource estimate at the Gunnison Copper Project in Arizona. The prior North Star mineral resource, reported in January, 2014, has now been updated to include the results of 13 additional diamond drill holes, totalling 17,110 feet that were completed in December, 2014.  The drill program was designed to convert a large part of the inferred mineral resource into the measured & indicated mineral resource categories.
 
Updated North Star Resource (Oxide and Transition at 0.05% cut-off)1, 2
  Short Tons 
(Millions)
Total Cu 
(%)
Pounds of Cu 
(Billions)
Change in Cu Pounds
(%)
Measured 199 0.36 1.43 +18.4
Indicated 667 0.26 3.53 +30.3
Measured & Indicated 866 0.29 4.95 +26.6
         
Inferred 173 0.17 0.58 -58.8
1Rounding as required by reporting guidelines may result in apparent discrepancies between tons, grade, and contained metal content.
2The 0.05% Total Cu cutoff was chosen to define resources potentially available to in-situ leaching.

 

The combined measured & indicated mineral resources estimate has increased by 26.6% as a result of the conversion of some of the 1.39 billion pounds of Cu (388 million short tons at 0.21% Cu) in the inferred mineral resource category into the measured & indicated categories.

The total mineral resource estimate for the North Star Deposit is based on results from 122 drill holes totalling 158,785 feet and is effective as of June 1, 2015.  Mr. Michael M. Gustin, with the independent firm Mine Development Associates of Reno, Nevada, is a Qualified Person as defined by NI 43-101 and is responsible for this mineral resource estimate. He has verified, reviewed and approved the technical disclosure contained in this news release. Mr. Gustin has verified the data underlying the results by reviewing the drilling, sampling, assay, and quality assurance and quality control data, as well as the geologic interpretations completed by Excelsior.  The estimate is classified as a measured, indicated or inferred mineral resource, consistent with the CIM definitions referred to in NI 43-101. Excelsior is not aware of any environmental, permitting, legal, title, taxation, socio-political, marketing or other issues which may materially affect its estimate of mineral resources. 

The North Star mineral resources were modeled to respect the detailed lithologic, structural, and oxidation modeling completed by Excelsior.  Copper mineral domains were interpreted on 100-foot spaced, east-west vertical cross sections that span the 2.3-mile north-south and 1.3-mile east-west extents of the deposit.  These domains were then used to explicitly constrain the estimation of copper grades into 50 x 100 x 25 foot (x, y, z) model blocks using 20-foot composites and inverse-distance interpolation.  The grade estimation is further controlled by the incorporation of a number of unique search ellipses that reflect the various orientations of the modeled structural zones, as well as the strike and dip of the favorable stratigraphic units in areas unaffected by the structures.

All samples were prepared from manually split half-core sections on site in Arizona. Split drill core samples were then sent to Skyline Assayers & Laboratories (“Skyline”) in Tucson, Arizona, an independent laboratory, for Total Copper and Sequential Copper analyses. Skyline is accredited with international standard ISO/IEC 17025:2005 General Requirements for the Competence of Testing and Calibration Laboratories. Total Copper, Acid Soluble Copper and Cyanide Soluble Copper were analyzed.  Excelsior has no relationship with Skyline Labs other than Skyline being a service provider. Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman 

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details of the mineral resource estimate; and (ii) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

June 9, 2015                                                          

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that feasibility level hydrological test work has been completed at the Gunnison Copper Project in Arizona.

A total of 26 hydrological test wells, totalling 25,870 feet of drilling, were used in the current hydrological test program. The holes were drilled in various locations around the North Star deposit, representing a variety of fractured zones, rock types and mineralized areas. Of the 26 holes drilled, 18 were pump test holes and 8 were observation holes. The pump test holes were pumped for approximately five days and were surrounded by the new observation wells and by numerous pre-existing observation wells. In all, approximately 65 observation wells were monitored during the pump testing, generating a comprehensive high quality data set.

The data collected from this program will be used to characterize the various groundwater properties that determine the movement of fluids through the mineralized bedrock. This information will be used to produce 3D hydro-geological models for requisite permit applications and the bankable feasibility study. The 3D hydro-geological models will simulate the planned in-situ recovery process and demonstrate hydraulic control during mining operations. Excelsior management expects the results of all testing, and 3D models will be completed by early Q3. Excelsior will issue a press release when this work is fully complete.

Commenting on the completion of the hydrology test work, Stephen Twyerould, President and CEO stated, “The successful conclusion of our hydrological test program, on time and on budget, demonstrates our ability to run complex technical work programs with optimal efficiency. We look forward to releasing the results of our test work and 3D hydrological modelling and moving the Gunnison Project a significant step closer to commercial production.”

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman


For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) commercial production from the Gunnison Project; (ii) the preparation of 3D models; (iii) the timing of final hydrology program results, (iv) the preparation of a feasibility study and (v) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

May 20, 2015                                                        

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce interim results from ten “fracture simulation” leach tests at the Gunnison Copper Project in Arizona.

The tests demonstrate copper recovery from the fractured rocks occurs rapidly and relatively uniformly across all rock types. The tests have also allowed for detailed and quantitative acid consumption measurements. To date, the results of recovery and acid consumption are entirely consistent with the metallurgical parameters used in the 2014 Prefeasibility Study (PFS).

On September 15, 2014, Excelsior announced that it had commenced a metallurgical drilling and testing program at the Gunnison Copper Project. The drilling program consisted of ten (10) diamond-drill holes totalling 5,899 feet (11,306 feet in total drilling). The drilling program generated new samples, representing a variety of structures and rock types, which were then submitted for extensive metallurgical testing. The results of the metallurgical tests will be used to determine copper extraction rates, acid consumption rates, and rinsing procedures and rates. Results will be used for both the permit application process and the Feasibility Study.

A total of ten “fracture simulation” leach tests have been ongoing as part of the metallurgical program. Fracture simulation boxes #1 and #2 have been completed after 199 and 166 days of respective leaching. Box #3 is still leaching after 170 days and the remaining seven boxes have been leaching for approximately 80 days. Highlights of the preliminary results are set out in Table 1 below.

Commenting on these results, Stephen Twyerould, President and C.E.O. said, “The fracture simulation boxes offer us the best lab-scale testing of expected underground leach conditions to date. We are pleased to see that across all rock types, these initial results mirror the industry-leading outcomes from our 2014 Prefeasibility Study in terms of acid consumption and copper recoveries. Once again, Excelsior has returned results that highlight the viability of an in-situ recovery operation at Gunnison.”

Final metallurgical test results are expected to be released in July, 2015. In addition, Excelsior has also been undertaking a hydrology program that involved drilling 26 hydrological test wells. Extensive geophysical logging and pump testing is currently being conducted on these holes to define the hydrological properties that control fluid movement through the naturally fractured, mineralized, bedrock. The results of the hydrological program are also expected to be available in July 2015.

Details Regarding Metallurgical Tests

The fracture simulation leach tests were designed to simulate the leaching of copper from a fracture surface as would occur during in-situ recovery operations at the Gunnison Copper Project. Natural, mineralized, fracture surfaces were taken from drill core representing the major rock and mineralization types found in the deposit. Samples were then embedded in acid resistant epoxy such that all un-natural surfaces of the core were covered by epoxy and the natural, mineralized, fracture, surfaces were left exposed to the leach solution. The samples were placed in an approximately 9 foot long by 10 inch wide clear Perspex box with the un-coated mineralized fracture surfaces facing upwards, and the rest of the sample surrounded by epoxy, thereby restricting the leaching process to the fracture surface. A clear Perspex lid was placed on top of each box with minimal void space between the lid and the fracture surface (Figures 1 and 2). Mature raffinate, at 15 grams per litre acid concentration, was delivered at one end of the box, fully saturating the core, and moving across the fracture surface in a controlled manner, thereby producing copper-rich leach solution that was collected and sampled at the other end of the box (Figure 3).

Figures 1, 2, and 3 can be viewed via the following link:
http://www.excelsiormining.com/index.php/projects

Results indicate copper is leaching rapidly and relatively uniformly across all rock types. Recoveries reported in Table 1 include copper leached from typical copper oxide minerals (e.g. chrysocolla), that report to the acid soluble assay, as well as slow leaching and transitional copper minerals that do not typically report to the acid soluble copper assay.

One of the key deliverables from these tests is quantitative acid consumption numbers (see Table 1). These results are consistent with the numbers used in Excelsior’s Prefeasibility Study.

Table 1. Interim results from fracture simulation leach testing.

Ore Core Tray At 80 days At 160 days
Recovery* 
%
Acid Consumption 
(lbs/lb Cu)
Recovery* 
%
Acid Consumption 
(lbs/lb Cu)
Lower Abrigo 1 59.9 5.5 76.9 6.2
10 73.9 4.1    
Middle Abrigo 6 62.8 5.0    
9 61.9 5.8    
Upper Abrigo 2 59.7 3.7 78.8 4.5
5 64.7 7.4    
Martin 3 43.7 4.6 71.3 5.9
4 59.1 11.7    
7 62.7 8.3    
8 58.0 3.2    
*The Recovery percentage is expressed as the percentage of leachable copper, which includes typical acid soluble minerals as well as slow leaching oxides and transitional sulfides.

 

Leaching of boxes 4 to 10 will continue over the next several weeks. The data collected from these boxes will be used to develop recovery and acid consumption models to be used in Excelsior’s Feasibility Study.

Metallurgical testing is being conducted by the independent laboratory, MAG (Minerals Advisory Group) of Tucson, Arizona under the supervision of Dr. Ronald J. Roman, an independent consultant who is a Qualified Person as defined by National Instrument 43-101. Dr. Roman has reviewed and approved the technical information disclosed in this news release. Dr. Roman has verified the data underlying the test results by designing the test procedure, supervising the test work, obtaining all the analytical data over the life of the experiment and performing the calculations presented above.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) acid consumption and copper recoveries; (ii) the preparation of a feasibility study model; (iii) the timing of final metallurgical program and hydrology program results and (iv) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

March 26, 2015                                                   

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce the completion of the hydrology drill program at the Gunnison Copper Project in Arizona. Excelsior is also releasing the diamond drill assay results from the feasibility resource upgrade program.

The hydrological drill program announced on October 28, 2014 has now concluded. The primary component of the hydrological program comprised 26 hydrology test and observation wells totalling approximately 28,000 feet. Extensive geophysical logging was completed on all holes. Pump testing has begun and will continue over the next several months. The objective of the program is to characterize the hydrological parameters of the mineralized rocks by measuring groundwater movement through the rocks. Results will be used to construct a numerical groundwater flow model to simulate in-situ recovery operations and to assist with permit applications. Additional long-term aquifer testing will also be conducted on previously constructed wells. Data interpretation and modeling is expected to be completed in Q2 2015.

Commenting on these results, President & CEO, Stephen Twyerould stated, “The completion of the hydrology drill program represents another key feasibility milestone completed on time and on budget. The remaining key feasibility work programs are on schedule, with additional data sets due in early Q3. Given our good performance to date, it is exciting to see our Gunnison Copper Project progress in such a rapid and efficient manner.”

Assay results (see table below) for the geological drilling program consisting of 13 diamond drill holes, totalling 17,110 feet, have now been returned. The program was designed to investigate the marginal extremities of the North Star deposit and collect additional geological information. Results are consistent with expectations and previous drill holes in the area. A new resource calculation will be incorporated into the feasibility study currently being prepared, together with additional data from the comprehensive metallurgical and hydrology programs. Total copper grades should be considered in the context of the proposed mining method. Excelsior intends to mine the Gunnison Copper Project using in-situ recovery, whereby a weak acid solution dissolves copper minerals from the surfaces of naturally occurring fractures. The host rocks remain substantially undisturbed; however, the host rocks must be included in the calculation when determining total copper grades for the purpose of establishing a mineral resource that is prepared in accordance with National Instrument 43-(101).

2014 Gunnison Copper Project Resource Drilling

0.05% Total Copper Cut-off

  From (ft) To (ft) Intercept (ft) Total Copper %
NSD-030 270 613.3 343.3 0.25
NSD-033 640 1510 870 0.29
NSD-034 440 830 390 0.14
NSD-035A 300 840 540 0.26
NSD-036 576.8 610 33.2 0.55
NSD-037 620 670 50 0.11
and 780 1030 250 0.14
and 1190 1284.4 94.4 0.22
NSD-038B 1100 1591 491 0.28
NSD-039 740 1030 290 0.10
and 1090 1490 400 0.32
NSD-040 931 1880 949 0.23
NSD-041 1106.5 1390 283.5 0.12
and 1520 1766 246 0.46
NSD-042 460 1513 1053 0.17
NSD-043 730 880 150 0.15
and 1294.3 1326.5 32.2 0.29
and 1414 1650 236 0.26
and 1720 1736 16 0.10
NSD-044 Drill hole collapsed before reaching target.


A map showing the location of the drill holes can be found on the Company’s website at www.excelsiormining.com

All samples were prepared from manually split half-core sections on site in Arizona. Split drill core samples are then sent to Skyline Assayers & Laboratories (“Skyline”) in Tucson, Arizona, an independent laboratory, for Total Copper and Sequential Copper analyses. Skyline is accredited with international standard ISO/IEC 17025:2005 General Requirements for the Competence of Testing and Calibration Laboratories. Total Cu (TCu), acid soluble Cu (ASCu) and cyanide soluble Cu (CNCu) were analyzed. Excelsior has no relationship with Skyline Labs other than Skyline being a service provider.Standards, blanks, and duplicate assays are included at regular intervals in each sample batch submitted from the field as part of an ongoing Quality Assurance/Quality Control Program. The drill holes are vertical and the mineralization ranges from flat lying to a 30 degreedip to the east resulting in a 1 to 1 relationship between sample length and true thickness to a 1 to 0.87 relationship between sample length and true thickness depending on the dip of the mineralization.

Dr. Roland Goodgame, Member AIG, Executive Vice President of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release. Dr. Goodgame has verified the data underlying the results by supervising the drilling, sampling, assay, geology, quality assurance, quality control and interpretation.

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.


ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman


For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details, expected results, and time for completion of the hydrology program; (ii) the in-situ recovery process; (iii) the interpretation of the results of the drill program; and (iv) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

February 11, 2015                                                

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce it has been recognized by TSX Venture Exchange (“TSXV”) as one of the 2015 TSX Venture 50 companies, a ranking of the top performing companies listed on TSXV last year.

Each year, the TSX Venture 50 ranks the top ten companies listed on TSXV across five major industry sectors: Oil and Gas, Mining, Technology & Life Sciences, Diversified Industries and Clean Technology. These companies have shown impressive results in key measures of market performance and were selected based on four equally weighted criteria: market capitalization growth, share price appreciation, trading volume and analyst coverage. Excelsior was ranked second within the Mining category.

Commenting on this news, Executive Chairman, Mark Morabito said, “Excelsior enjoyed a year highlighted with several noteworthy achievements: we saw the release of an industry leading prefeasibility study, the securing of a strategic partner, and the raising of over $17 million. Excelsior management led by President & CEO Stephen Twyerould, Excelsior staff and a fully engaged board, have worked diligently to advance what we believe to be the most exciting copper project in the United States. The entire team is fully deserving of this recognition.”

About Excelsior
Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman


For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 29, 2015

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that its metallurgical, resource and hydrological programs are progressing successfully at the Gunnison Copper Project in Arizona. Data collection is expected to be completed by the end of Q2, 2015 and the results will be used for the preparation of the feasibility study and permit applications.

Metallurgical Program

A total of 29 samples, representing a variety of structures and rock types, have been submitted for metallurgical testing.

Twenty-three submerged column testswill leach for 60 to 120 days. These tests are designed to compare the leaching characteristics of the different rock types and fracture intensities.

A total of ten fracture simulation box tests will also form part of the overall metallurgical program, four of which are already under leach. These box tests are expected to leach for 90 to 160 days and are designed to simulate the leaching characteristics of a mineralized fracture. The results will be used to determine acid consumption and copper recovery rates for a variety of representative rock and fracture types. Photos of the current box tests can be found on Excelsior’s website: http://www.excelsiormining.com/index.php/projects

Metallurgical testing will be conducted by the independent laboratory, MAG (Minerals Advisory Group) of Tucson, Arizona under the supervision of Dr. Ronald J. Roman, an independent consultant who is a Qualified Person as defined by National Instrument 43-101. For further information please see the Company’s previous news release dated November 11, 2014 – “Successful Metallurgical Drill Program Concludes at Gunnison”.

Resource Upgrade Program

A total of 13 diamond drill holes, totalling 17,110 feet, were completed in December, 2014. Assay results from this drilling are expected in Q1 of this year. The program is designed to convert a large part of the Gunnison Project inferred mineral resource of 1.4 billion pounds of copper (338 million tons grading 0.21% Cu) into the measured & indicated mineral resource categories. A new resource calculation is expected by theendQ2, 2015. For further information please see the Company’s previous news release dated November 5, 2014 – “Excelsior Commences Resource Upgrade Drill Program”

Hydrology Program

Drilling of Excelsior’s 26 hydrological test wells is approximately 90% complete. Extensive geophysical logging and pump testing will be conducted on these holes to define the hydrological properties that control fluid movement through the naturally fractured, mineralized, bedrock. For further information please see the Company’s previous news release dated October 28, 2014 – “Excelsior Commences Hydrological Program

Commenting on the progress of the work program, Stephen Twyerould, President & CEO, said, “We are very satisfied with the pace and efficiency of the current work program and expect to meet our data collection timelines. The quality and quantity of the information we are generating is of exceptional standard and this bodes well for the quality of our current feasibility program on the Gunnison Project.”

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

Dr. Stephen Twyerould, Fellow of AUSIMM, President and CEO of Excelsior, and a Qualified Person as defined by NI 43-101, has reviewed and approved the technical information disclosed in this news release.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to (i) the details, timelines and expected results of the metallurgical, resource and hydrological programs; (ii) the completion of a feasibility study for the Gunnison Project; (iii) the conversion of inferred mineral resources to the measured and indicated categories; and (iv) the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 15, 2015

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that it has been approved for graduation from Tier 2 issuer status to Tier 1 issuer status by the TSX Venture Exchange. Excelsior will commence trading as a Tier 1 issuer on the TSX Venture Exchange on January 15, 2015. Tier 1 is the premier tier on the TSX Venture Exchange and is reserved for the most advanced issuers with significant financial resources.

Commenting on this news, Stephen Twyerould, President and CEO said, “Excelsior’s graduation to Tier 1 of the TSX Venture Exchange is a further demonstration of the quality of the Gunnison Copper Project and of our management team.”

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production. Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.


ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman


For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com
www.gunnisoncopper.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of the word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

January 7, 2015

Excelsior Mining Corp. (TSX-V: MIN) (Frankfurt: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce that it has formally exercised the option (the “Option”) with the James L. Sullivan Trust (the “Trust”), and entities owned by the Trust, to acquire 100% of the mineral interests that comprise the Gunnison Project located in Cochise County, Arizona.

Commenting on this news, Stephen Twyerould, President & CEO said, “The acquisition of the Gunnison mineral rights is a significant milestone for the Company and a successful start to what promises to be an important year in the progression of the Gunnison Copper project. We look forward to advancing this world-class asset into production.”

The Option to acquire the Gunnison Project was held under the terms of an Amended Option Agreement (the “Agreement”) with the Trust and entities owned by the Trust. In order to exercise the Option, Excelsior made the final payment of US$50,000 to the Trust that was due under the terms of the Agreement.  

About Excelsior

Excelsior is a mineral exploration and development company that is advancing the Gunnison Copper Project. The Excelsior management team consists of experienced professionals with proven track records of advancing mining projects into production.  Further information about the Gunnison Copper Project can be found in the technical report filed on SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 43-101 Technical Report, Prefeasibility Study” dated February 14, 2014.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

ON BEHALF OF THE EXCELSIOR BOARD

"Mark J. Morabito"
Executive Chairman

For further information regarding this press release please contact:

Excelsior Mining Corp.
JJ Jennex, Vice President, Corporate Affairs
T: 604-681-8030 x240
E: This email address is being protected from spambots. You need JavaScript enabled to view it.
www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to the advancement of the Gunnison Project.

Such forward-looking information can be identified by the use of word “will”. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

December 19, 2016

Fellow Investors,

I want to start with the one word that I feel best encapsulates not just this past year, but our entire history as a company: “credibility”. We believe that the way to create genuine value is by setting realistic goals and then delivering on those goals. As we head into our final year of development, our business model will continue to reflect a company that knows exactly what needs to be done in order to achieve all of our goals.

At the start of 2016 we set ourselves some very significant targets. In every case, we achieved those targets and met our budgetary expectations, all of which proved accretive to our market capitalization.

Some of the significant milestones from this past year included:

  • Full integration of the Johnson Camp Mine into our company; the facility remains in good working order and will allow us to commence production via a low-cost, staged, ramp-up;
  • Filed state and federal permits that are progressing well through the regulatory process;
  • Raised significant capital at a premium to our then market price; these funds are expected to see us well past the targeted construction decision;
  • Completed an Updated Prefeasibility Study and a Feasibility Study; both of theses technical reports highlight the industry-leading low operating costs, low capital costs and small environmental footprint that should make our project one of the most attractive new copper mines in the world.

These accomplishments reflect the quality of our management team. We have the experience and business acumen necessary to take the Gunnison Copper Project into full production, and that is exactly what we intend to do.   

The next big milestone ahead of us will be the receipt of operating permits. Permitting is one of the biggest issues facing a pre-production project, and we remain very confident that our operating permits will be received in keeping with our track record of achieving milestones on time and on budget. We are very proud of the quality of our community out-reach program, which we initiated over five years ago. Additionally, we know that our permitting team, led by VP Sustainability, Rebecca Sawyer, has the capacity and experience to deliver on this key milestone.

I offer my appreciation for all of our investors and stakeholders who have maintained their support. Heading into the New Year, our goals remain the same: we are working towards a resounding technical and market success. There is no reason why we cannot accomplish both and we will be satisfied with nothing less.

Kind Regards,
Stephen Twyerould
Present & Chief Executive Officer

About Excelsior Mining

Excelsior Mining “The Copper Solution Company” is a mineral exploration and development company that is advancing the Gunnison Copper Project in Cochise County, Arizona. The project is an advanced staged, low cost, environmentally friendly in-situ recovery copper extraction project that is scheduled for commercial production in 2018.

Further information about the Gunnison Copper Project can be found in the Company’s news release dated December 5, 2016 filed on SEDAR at www.sedar.com. Excelsior’s technical work on the Gunnison Copper Project is supervised by Stephen Twyerould, Fellow of AUSIMM, President & CEO of Excelsior and a Qualified Person as defined by National Instrument 43-101. Mr. Twyerould has reviewed and approved the technical information contained in this letter.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" concerning anticipated developments and events that may occur in the future. Forward looking information contained in this news release includes, but is not limited to, statements with respect to: (i) the low-cost nature of the Gunnison Project; (ii) the commencement of commercial production from the Gunnison Project; (iii) the timelines associated with the permitting process; (iv) the issuance of permits for the Gunnison Project; (v) that the Gunnison Project will be environmentally friendly;  and (vi) the ability to mine the Gunnison Project using in-situ recovery mining techniques.

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" suggesting future outcomes, or other expectations, beliefs, plans, objectives, assumptions, intentions or statements about future events or performance. Forward-looking information contained in this news release is based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and mineral reserves, the realization of resource and reserve estimates, copper and other metal prices, the timing and amount of future exploration and development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and operating costs, the availability of necessary financing and materials to continue to explore and develop the Gunnison Project in the short and long-term, the progress of exploration and development activities, the receipt of necessary regulatory approvals, the completion of the permitting process, the estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental risks, title disputes or claims, and other similar matters. While the Company considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. Such factors include risks inherent in the exploration and development of mineral deposits, including risks relating to changes in project parameters as plans continue to be redefined including the possibility that mining operations may not commence at the Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties inherent in the estimation of mineral resources, access and supply risks, reliance on key personnel, operational risks inherent in the conduct of mining activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of delays or increased costs that might be encountered during the development process, regulatory risks, including risks relating to the acquisition of the necessary licenses and permits, financing, capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, environmental risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Accordingly, readers should not place undue reliance on forward-looking information. The forward-looking information is made as of the date of this news release. Except as required by applicable securities laws, the Company does not undertake any obligation to publicly update or revise any forward-looking information.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release, and no securities regulatory authority has either approved or disapproved of the contents of this release.

Excelsior Mining Corp. (TSX-V: MIN) (FSE: 3XS) (OTCQX: EXMGF) ("Excelsior" or the “Company”) is pleased to announce the results of a comprehensive Feasibility Study (“FS”) on the North Star Deposit of the Gunnison Copper Project, located in Cochise County, southeastern Arizona. The project is designed as a copper in-situ recovery (“ISR”) mine using solvent extraction-electrowinning (“SX-EW”).

Highlights of the FS (United States dollars)

  • Net Present Value (“NPV”) of $1.172 billion pre-tax and $807 million post-tax
    • at 7.5% discount rate using a life of mine (“LOM”) copper price of $2.75/lb;
  • Internal Rate of Return (“IRR”) of 48% pre-tax and 40% post-tax;
  • Initial construction capital costs of $46.9 million
    • includes 15% contingency, 16% EPCM, freight, mobile equipment, owner’s costs and capital spares;
  • Payback period for initial capital of 2.3 years pre-tax and 2.8 years post-tax;
  • Average life of mine operating costs of $0.65/lb;
  • All-In Cost (LOM capital costs plus operating costs) of $1.23/lb;
  • 42 million pounds of copper added to the Probable Reserve;
  • Life of Mine: 24 years of commercial production;
  • Staged production profile: initial production rate of 25 million pounds of copper cathode per annum using the existing Johnson Camp Mine (“JCM”) facilities, followed by an intermediate expansion stage to 75 million pounds per annum and final expansion stage to full production of 125 million pounds per annum (includes the construction of an acid plant at full production). The staged production profile makes possible the funding of future expansions out of cash flow.

Commenting on this news, President & CEO, Stephen Twyerould said, “The release of our Feasibility Study completes the last major technical milestone prior to receipt of operating permits. We have once again delivered a very robust product with outstanding economics. Excelsior’s entire team can take pride in this outcome and our belief that the Gunnison Copper Project will be the next new copper mine in the United States.”


Sensitivity Analysis
PRE-TAX
  Acid Plant Non-Acid Plant
Cu Price $3.25 $3.00 $2.75 $2.50 $2.25 $3.25 $3.00 $2.75 $2.50 $2.25
IRR 62% 55% 48% 41% 34% 63% 56% 48% 41% 33%
NPV* $1,588 $1,380 $1,172 $963 $755 $1,396 $1,187 $978 $768 $559
AFTER-TAX
  Acid Plant Non-Acid Plant
Cu Price $3.25 $3.00 $2.75 $2.50 $2.25 $3.25 $3.00 $2.75 $2.50 $2.25
IRR 51% 45% 40% 35% 29% 51% 46% 41% 35% 28%
NPV* $1,086 $947 $807 $664 $522 $972 $831 $691 $548 $405
*million $ at 7.5% discount rate

 

Twyerould added, “Because of the special characteristics of the North Star deposit, and by extension our ability to employ the in-situ mining method, the project economics remain exceptionally strong even at low copper prices. As demonstrated in the table above, the high margin enjoyed by the Gunnison Copper Project is our critical advantage and the key to our risk management.”

The FS was completed by M3 Engineering & Technology Corporation (“M3”) of Tucson, AZ and is effective as of December 5, 2016. The technical report (the “Report”) summarizing the results of the FS, and prepared in accordance with National Instrument (“NI”) 43-101, will be filed on SEDAR and Excelsior’s website within 45 days of this news release. Results of the FS disclosed in this press release are in United States Dollars.

Financial Analysis

As highlighted in the tables below, the FS demonstrates excellent project economics. Based on an initial production rate of 25 million pounds per annum, the FS base case generates a post-tax NPV of $807 million (at a cash flow discount of 7.5%), an IRR of 40.1% and a payback period for initial capital of 2.3 years. This financial analysis is based on a number of assumptions which will be fully set out in the Report.

The base case uses the following parameters over the 24-years of production:

  • Copper selling price of $2.75 per pound;
  • Total copper recovery of approximately 48% (based on a combination of metallurgical recovery and estimated sweep efficiency);
  • Average of approximately 9.0 pounds of acid consumed for every pound of copper produced;
  • Initial acid price of $100/ton for years 1 to 3, $125/ ton for years 4 to 6, declining to $46.19/ton as of year 7 (acid plant is built in year 6);
  • State tax rate of 6.97% and a federal tax rate of 35%;
  • Staged production commencing at 25 million pounds per annum, ramping up to 75 million pounds in year 4, and then to 125 million pounds per annum in year 7.
FINANCIAL ANALYSIS SUMMARY
  Pre-Tax Post-Tax
IRR 48.3% 40.1%
Initial Capital Payback (years) 2.3 2.8
NPV (million) @7.5%