Western Sierra (OTC WSRA) Joint Venture Funding for Ore Cache Mine Development

PRESCOTT, AZ, May 11 (MARKET WIRE) --
Western Sierra Mining Corp., (PINKSHEETS: WSRA) announced today that it
has received initial funding of $50,000.00 for its joint venture on the
Oro Cache hard rock gold property. These initial funds do not involve any
dilution to WSRA shareholders and represent the first installment of the
total joint venture funding commitment of $1,000,000.00 to $1,400,000.00
be received over the next twelve months. This funding will allow the
initiation of the Phase I goals of improving access to the main portal
and the filing of exploration permits with the U.S. Forest Service. It
will also allow commencement of a pre-production testing program for the
Oro Cache hard rock gold property and preliminary design work on the gold
recovery plant.

Michael Chaffee, CEO and President of Western Sierra Mining, commented,
"We are very pleased to be able to commence this joint-venture with Gold
Coast Mining Corp. These initial funds will allow us to make significant
progress toward production of the proven gold reserves at the Oro Cache
Mine. With a current portfolio of over $1,000,000,000.00 in proven,
probable and indicated reserves in property, projects and leases we hope
to be able to announce more progress during the second quarter of 2009.
We are committed to transitioning WSRA to a revenue-producing gold
production company as quickly as possible to enhance shareholder value."
Potential development partners or shareholders may request more
information by contacting the company directly, registering at
http://www.kitco.com/leadgen/companies/westernsierra/ or by emailing a
request to wsragold@yahoo.com.

About Western Sierra Mining Corp.

Western Sierra Mining is an aggressive gold and silver exploration and
mining company that has been in the exploration mode for the past four
years. Incorporated in Utah in 1907, we have a heritage of over 100 years
in gold and silver mining and exploration. Focused on the historic mining
districts of the Bradshaw mountains of Arizona, with additional areas of
interest within Nevada and Mexico, our current projects include the
SunGold, Oro Cache, and the Big Chief Mines, all of which have
demonstrated high-grade mineralization with previous histories of
production. Long-term company goals are to create maximum shareholder
value by continuing to build a strong base of properties and advance
these projects toward production. For more information on Western Sierra
Mining please go to http://www.westernsierramining.com.

Safe Harbor

This press release contains statements, which may constitute
"forward-looking statements" within the meaning of the Securities Act of
1933 and the Securities Exchange Act of 1934, as amended by the Private
Securities Litigation Reform Act of 1995. Those statements include
statements regarding the intent, belief or current expectations of Western
Sierra Mining Corp., and members of its management as well as the
assumptions on which such statements are based. Prospective investors are
cautioned that any such forward-looking statements are not guarantees of
future performance and involve risks and uncertainties, and that actual
results may differ materially from those contemplated by such
forward-looking statements. Important factors currently known to
management that could cause actual results to differ materially from
those in forward-looking statements include fluctuation of operating
results, the ability to compete successfully and the ability to complete
before-mentioned transactions. The company undertakes no obligation to
update or revise forward-looking statements to reflect changed
assumptions, the occurrence of unanticipated events or changes to future
operating results.

Contact:
Michael Chaffee
928-680-5513

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