2011 News Releases
Excelsior Completes Hydrological and Metallurgical Programs
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.
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
Cautionary Note Regarding 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.