Drill Program On Gunnison Copper Property 

VANCOUVER, BC - Excelsior Mining Corp. reported additional assay results from the drill program on the Gunnison Copper Property located within the copper porphyry belt in 65 miles southwest of Tucson, Arizona in Cochise County.

"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." 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. An upgraded resource estimate is expected at the end of the second quarter of 2011. The company's address is 240, 1140 West Pender Street, Vancouver, BC V6E 4G1, 604-681-8030, fax: 604-681-8039.