Stillwater Raises Additional Concerns about Dr. Charles Engles as a Clinton Group Director Nominee and Potential CEO Candidate

  Stillwater Raises Additional Concerns about Dr. Charles Engles as a Clinton
  Group Director Nominee and Potential CEO Candidate for Stillwater

 Company Calls on Gregory Taxin and Clinton Group to Disclose Nominee Vetting

Business Wire

BILLINGS, Mont. -- April 18, 2013

Stillwater Mining Company (NYSE:SWC) (TSX:SWC.U) (“Stillwater” or the
“Company”) today raised additional concerns regarding the Clinton Group,
Inc.’s (“Clinton Group”) nomination of Dr. Charles Engles to Stillwater’s
Board of Directors and its consideration of Dr. Engles as a potential CEO
candidate. Stillwater also called on Gregory Taxin of the Clinton Group and a
nominee himself to produce details of Clinton Group’s director nominee vetting
process, which has been highly questionable.

After repeated calls for Dr. Engles to be transparent and forthright with
shareholders about why he abruptly resigned from Stillwater in 1997, Dr.
Engles and the Clinton Group have failed to make an honest and adequate
disclosure. It is incumbent on Dr. Engles to explain his abrupt resignation
pursuant to an agreement with the Company, and details of the internal
investigation that preceded his departure. Shareholders deserve to know the
full truth about this important matter.

Separately, as disclosed in Stillwater’s Form 10-K for 1997 and 1998, the
Company, under Dr. Engles, entered into forward price hedges for over 60
percent of its 1998 palladium production at $134 per ounce – a price that fell
far short of covering the costs of producing palladium at the time. Following
Dr. Engles’s departure, these hedges significantly impaired the Company’s
financial performance.

Today, with Stillwater positioned to create shareholder value through growth
projects and expansion in Montana, the Clinton Group is advocating price
collars and the unnecessary early repayment of debt. Dr. Engles’s palladium
hedging strategy proved disadvantageous for the Company in the past; it would
be imprudent to replicate it and expect a different result.

Gregory Taxin and the Clinton Group have failed to perform the most basic of
background checks on its director nominees that has resulted in a highly
questionable vetting process. Stillwater calls on Gregory Taxin to produce
details of the vetting process for each of the Clinton Group’s nominees given
the serious questions that have been raised about their credentials and

  *Clinton Group pulled its former nominee, John DeMichiei, from its slate
    promptly after Stillwater pointed out serious misstatements in Mr.
    DeMichiei’s academic credentials.
  *Dr. Engles has failed to address the circumstances of his abrupt
    resignation as CEO of Stillwater after only two and a half years or
    details of the internal investigation that preceded his departure.
  *What other information has Clinton Group failed to identify or willfully
    ignored about its nominees?

Shareholders should not be asked to support an unqualified slate of directors
that was not properly vetted. They deserve to know the facts about all of
Clinton’s nominees: Charles Engles, Brian Schweitzer, Seth Gardner, Michael
McNamara, Patrice Merrin, Mick McMullen, and of course, Gregory Taxin.

All shareholders of record as of March 6, 2013 are entitled to vote at the
2013 Annual Shareholders Meeting on May 2, 2013. Stillwater encourages all
shareholders to carefully review its definitive proxy filing and other
materials and vote only their WHITE proxy card. For more information about
Stillwater’s 2013 Annual Shareholders Meeting, please visit

About Stillwater Mining Company

Stillwater Mining Company is the only U.S. producer of palladium and platinum
and is the largest primary producer of platinum group metals outside of South
Africa and the Russian Federation. The Company’s shares are traded on the New
York Stock Exchange under the symbol SWC and on the Toronto Stock Exchange
under the symbol SWC.U. Information on Stillwater Mining Company can be found
at its website:

Some statements contained in this news release are forward-looking statements
within the meaning of Section 27A of the Securities Act of 1933, as amended,
and Section 21E of the Securities Exchange Act of 1934, as amended, and,
therefore, involve uncertainties or risks that could cause actual results to
differ materially. These statements may contain words such as "believes,"
"anticipates," "plans," "expects," "intends," "projects", "estimates,"
"forecast," "guidance," or similar expressions. These statements are not
guarantees of the Company's future performance and are subject to risks,
uncertainties and other important factors that could cause our actual
performance or achievements to differ materially from those expressed or
implied by these forward-looking statements. Such statements include, but are
not limited to, comments regarding expansion plans, costs, grade, production
and recovery rates, permitting, financing needs, the terms of future credit
facilities and capital expenditures, increases in processing capacity, cost
reduction measures, safety, timing for engineering studies, and environmental
permitting and compliance, litigation, labor matters and the palladium and
platinum market. Additional information regarding factors, which could cause
results to differ materially from management's expectations, is found in the
section entitled "Risk Factors" in the Company's 2012 Annual Report on Form
10-K and in subsequent filings with the United States Securities & Exchange
Commission. The Company intends that the forward-looking statements contained
herein be subject to the above-mentioned statutory safe harbors. Investors are
cautioned not to rely on forward-looking statements. The Company disclaims any
obligation to update forward-looking statements.


For Stillwater Mining Company
Mike Beckstead, 406-373-8971
Innisfree M&A Incorporated
Arthur Crozier / Jennifer Shotwell / Scott Winter
Sard Verbinnen & Co
Dan Gagnier / Michael Henson
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