Exhibit 31.1
 CERTIFICATION
 Francis R. McAllister
 1.
    
    I have reviewed this Annual Report on Form 10-K of Stillwater Mining Company;2.
    
    Based on my knowledge, this report does not contain any untrue statement of
a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this report;3.
    
    Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects
the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this report;4.
    
    The registrants other certifying officer and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined
in Exchange Act Rules 13a-15(e) and 15d-15(e) and internal control over
financial reporting (as defined in Exchange Act Rules 13a-15(f) and
15d-15(f)) for the registrant and have:
 a)
    
    Designed such disclosure controls and procedures, or
caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material
information relating to the registrant, including its
consolidated subsidiaries, is made known to us by others
within those entities, particularly during the period in
which this report is being prepared;b)
    
    Designed such internal control over financial reporting,
or caused such internal control over financial reporting
to be designed under our supervision, to provide
reasonable assurance regarding the reliability of
financial reporting and the preparation of financial
statements for external purposes in accordance with
generally accepted accounting principles;c)
    
    Evaluated the effectiveness of the registrants
disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the
disclosure controls and procedures, as of the end of the
period covered by this report based on such evaluation;
andd)
    
    Disclosed in this report any change in the registrants
internal control over financial reporting that occurred
during the registrants most recent fiscal quarter (the
registrants fourth fiscal quarter in the case of an
annual report) that has materially affected, or is
reasonably likely to materially affect, the registrants
internal control over financial reporting; and
 5.
    
    The registrants other certifying officer and I have disclosed, based
on our most recent evaluation of internal control over financial
reporting, to the registrants auditors and the audit committee of the
registrants board of directors (or persons performing the equivalent
functions):
 a)
    
    All significant deficiencies and material weaknesses in
the design or operation of internal control over
financial reporting which are reasonably likely to
adversely affect the registrants ability to record,
process, summarize and report financial information; andb)
    
    Any fraud, whether or not material, that involves
management or other employees who have a significant
role in the registrants internal control over financial
reporting.
 Dated: February 26, 2010
    
    /s/ Francis R. McAllisterFrancis R. McAllisterChairman and Chief Executive Officer