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2012 News Releases

Excelsior Intersects 599 Feet at 0.79% Copper

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: info@excelsiormining.com
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.