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                                                                   EXHIBIT 10.37

                            CENTURY ALUMINUM COMPANY

                            1996 STOCK INCENTIVE PLAN
                            IMPLEMENTATION GUIDELINES
                           [PERFORMANCE SHARE AWARDS]


1.       PURPOSE

         These guidelines ("Guidelines") are intended to provide direction for
         implementation of the Company's 1996 Stock Incentive Plan (the "Plan")
         with respect to Performance Share Awards. The Plan is intended to
         advance the interests of the Company by enabling Executive Officers and
         other key employees of the Company and its Subsidiaries to acquire
         proprietary interests in the Company, which interests are
         "performance-based compensation" within Section 162(m) of the Internal
         Revenue Code of 1986, as amended, and the regulations promulgated
         thereunder, through achievement by the Company of specified future
         performance and earnings goals.

2.       DEFINITIONS

         A. "Award" shall be as defined in Section 4.

         B. "Award Factor" shall be the percentage of each Participant's Award
that is payable for any of the Plan Periods as follows:

                  (1)      If Cumulative Earnings Before Taxes are at least 5%
                           greater than Target, then 110% of the Award, and then
                           increasing in additional 10% increments for each
                           additional 5% that Cumulative Earnings Before Tax
                           exceed the Target for the same period; provided,
                           however, that in no event shall the Award Factor
                           exceed 150%.

                  (2)      100% of the Award if Cumulative Earnings Before Tax
                           are at least 100% of Target for the same period but
                           not equal to or greater than 105% of such Target.

                  (3)      85% of the Award if Cumulative Earnings Before Tax
                           are at least 90% of Target for the same period but
                           are not equal to or greater than such Target.

                  (4)      70% of the Award if Cumulative Earnings Before Tax
                           are least 80% of Target for the same period but are
                           not 90% or more of such Target.

                  (5)      60% of the Award if Cumulative Earnings Before Tax
                           are less than 80% of Target, but 70% or more of
                           Target, for the same period, but ROI of the Company
                           exceeds Industry ROI for all companies set forth in
                           Section 2.H.



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                  (6)      50% of the Award if Cumulative Earnings Before Tax
                           are less than 70% of the Target, but 60% or more of
                           Target, for the same period, but ROI of the Company
                           exceeds Industry ROI for any four of the six
                           companies set forth in Section 2.H.

                  (7)      Zero if Cumulative Earnings Before Tax are less than
                           60% of the Target.

         C.       "Board" shall mean the Board of Directors of the Company.

         D.       "Committee" shall mean the Compensation Committee of the Board
                  of Directors of the Company, two members or more of whom shall
                  be directors who are not employees of the Company or any
                  Subsidiary.

         E.       "Company" shall mean Century Aluminum Company.

         F.       "Cumulative Earnings Before Tax" shall mean the aggregate
                  Earnings Before Tax during any of the Plan Periods.

         G.       "Earnings Before Tax" shall mean the earnings before all
                  taxes, and after deducting interest expense, on income of the
                  Company as reported in the annual audited financial statements
                  after adjustment for accrual for payments to be made under
                  this Plan, but, at the discretion of the Board, excluding
                  non-recurring items.

         H.       "Industry ROI" shall mean for Alumax Inc., the Aluminum
                  Company of America, Commonwealth Industries, Inc., Reynolds
                  Metals Company, Alcan Aluminum Limited and Kaiser Aluminum and
                  Chemical Corporation, the returns on invested capital for each
                  of the Plan Periods thereafter determined in each case in the
                  same manner as ROI of the Company, except that in each case,
                  as applicable, average minority shareholder interest, if any,
                  shall be added to average invested capital. For the purposes
                  of the comparisons contained in Section 2.B, (5) and (6), ROI
                  for each of the companies and the Company shall be carried out
                  to as many decimal places as required so that no two ROI's are
                  the same.

         I.       "Initial Periods" shall mean (a) calendar year 1998 and (b)
                  calendar years 1998 and 1999.

         J.       "Participant" shall mean any full-time salaried employee of
                  the Company or a Subsidiary designated as a Participant by the
                  Committee.

         K.       "Performance Shares" shall have the meaning set forth in the
                  Plan and shall entitle the grantee to receive one share of the
                  Company's common stock for each Performance Share awarded.


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         L.       "Plan Periods" shall mean overlapping periods of three
                  consecutive calendar years each, the first of which shall
                  commence January 1, 1998, and end December 31, 2000.

         M.       "ROI" shall mean the arithmetic average of the returns on
                  invested capital of the Company, stated as a percent, for each
                  of the calendar years of each Plan Period. It shall be
                  computed by dividing the Earnings Before Tax, after adding any
                  interest expense for such year, by the average of the
                  shareholders' equity plus borrowings of the Company, the
                  average in each case to be the sum of the shareholders' equity
                  plus borrowings on the last day of the immediately preceding
                  calendar year and on the last day of the calendar year in
                  question, in all respects as these items appear in the audited
                  financial statements of the Company.

         N.       "Section" shall mean a section of these Guidelines.

         O.       "Subsidiary" shall mean any corporation the voting stock of
                  which is 50% or more is owned, directly or indirectly, by the
                  Company.

         P.       "Target" shall mean the cumulative annual earnings before
                  income taxes established by the Committee as the goal for the
                  Initial Periods and for each of the Plan Periods, which goal
                  shall be guided by the cumulative forecasted earnings before
                  income taxes of the Company for the first three years of each
                  Five-Year Plan as contained in and submitted to the Board
                  annually in the document entitled "Century Aluminum Company's
                  Five Year Profit Plan". The Committee may use as its guide for
                  the Initial Periods and the first of the Plan Periods the
                  Profit Plan present to the Board by the Company on December
                  18, 1997.

3.       TERM

         Implementation of these Guidelines shall commence as of January 1,
         1998, and shall continue until such time as terminated by the Board.

4.       AWARD

         A.       AWARD. The Committee shall, on or before each May 15 during
                  the Initial Periods and each of the Plan Periods, make an
                  award of Performance Shares to each Participant, which award
                  shall be communicated in writing to each Participant by the
                  Chief Executive Officer of the Company. Awards shall be issued
                  as provided in Section 5. The Award for each Participant shall
                  be determined by creating a monetary award, and converting
                  that monetary award to Performance Share units. The monetary
                  award shall be a percentage of such Participant's base salary
                  (within the allowable range), which percentage shall be
                  established by the Committee at the beginning of each of the
                  Plan Periods. The allowable percentages are as follows:


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              Participant's Position                  Range of Allowable Percentages
              ----------------------                  ------------------------------

                                                            
                    CEO and COO                                80 - 100%
                 EVPs and Sr. VPs                               60 - 80%
                       VPs                                      45 - 60%
               Business Unit Heads                              30 - 45%
            Sr. Operating/Corporate Staff                       15 - 30%


The number of Performance Shares shall be determined by dividing the
Participant's monetary award by the average closing price for the Company's
common stock for the month preceding the month in which the grant is made.

         B.       TARGET AWARD; ADJUSTED AWARD.

                  1. TARGET AWARD. If the Company's Cumulative Earnings Before
                  Tax are at least 100% of Target but not equal to or greater
                  than 105% of such Target, then Participants shall be issued
                  the number of shares equal to the number of Performance Share
                  units in Participants' awards.

                           2. ADJUSTED AWARD. If the Award Factor is other than
                  as described in Section 4.B.(1), the Target Awards shall be
                  adjusted upward or downward as follows:

                  (a)      If a Participant's Award Factor is 105% or greater,
                           the number of Performance Shares in excess of the
                           100% award shall be calculated by dividing the
                           Participant's monetary award in excess of 100% by the
                           greater of the stock value on the date of the initial
                           grant of the Performance Shares or the average stock
                           price for the month immediately preceding the month
                           in which the Performance Shares are issued. An
                           example of how this provision is intended to operate
                           is attached to these Guidelines as Exhibit A.1.

                  (b)      If a Participant's Award Factor is less than 100% of
                           Target, the number of Performance Shares shall be
                           calculated by recalculating the Participant's
                           monetary Award by the applicable Award Factor and
                           converting the monetary award to Performance Share
                           units by the stock value used in calculating the
                           Target Award. An example of how this provision is
                           intended to operate is illustrated on Exhibit A.2.

5.       ISSUANCE OF AWARDS

         A.       On or before March 15 (or, if required, such later date when
                  the annual audited financial statement of the Company and the
                  other companies referred to in the definition of Industry ROI
                  are available) of each calendar year, the Company shall, in
                  respect of the Initial Period or Plan Period which has just
                  ended, issue to each Participant Performance Shares in an
                  amount equal to such Participant's Award multiplied by the
                  applicable Award Factor.

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         B.       Except as provided in Section 5.C., no grant with respect to
                  any Award shall be made to a Participant who is not employed
                  full time by the Company or a Subsidiary on the 31st day of
                  December preceding the date of issuance provided in Section
                  5.A.

         C.       In the event of death, permanent disability or retirement of a
                  Participant in any year following an Award, the Participant or
                  his representative or designated beneficiaries shall be
                  entitled to receive a portion of the amount calculated under
                  Section 5.A., and payable in the year following death,
                  permanent disability or retirement, determined by multiplying
                  such amount by a fraction, the numerator of which is the
                  number of weeks of full employment during any of the Initial
                  Periods or Plan Periods and the denominator of which is 52 for
                  the first Initial Period, 104 for the second Initial Period
                  and 156 for any Plan Period.

         D.       If an employee is selected as a Participant at any time other
                  than the beginning of any given Initial Period or Plan Period,
                  such Participant shall be entitled to receive a portion of the
                  amount calculated under Section 5.A. by multiplying such
                  amount by a fraction the numerator of which is the number of
                  months that such employee was a Participant under the plan
                  during any of the Initial Period or Plan Periods and the
                  denominator of which is number of months in the applicable
                  period. For the purposes of this Section 5.D. an employee
                  shall be deemed to have been a Participant under the Plan as
                  of January 1 of the calendar year in which such employee was
                  first selected a Participant if such selection occurred on or
                  before May 15 of such calendar year and if such selection
                  occurred after May 15 of any calendar year the employee shall
                  be deemed to have first become a Participant on January 1 of
                  the calendar year immediately following the employee's
                  election as a Participant.

6.       ADMINISTRATION

         A.       Each grant of a Performance Share shall be evidenced by an
                  agreement executed on behalf of the Company by an officer
                  designated by the Compensation Committee and accepted by the
                  recipient. Such agreement shall state that such award is
                  subject to all the terms and provisions of the Plan.

         B.       Full power and authority to amend, modify, terminate,
                  construe, interpret and administer these Guidelines shall be
                  vested in the Committee. Any interpretation of these
                  Guidelines by the Committee or any administrative act by the
                  Committee shall be final and binding on all Participants.

7.       NON-ASSIGNABILITY

         Nothing in these Guidelines shall be deemed to make rights granted
         pursuant hereto assignable or transferable by a Participant except
         pursuant to the laws of descent and distribution. No rights under these
         Guidelines may be hypothecated or encumbered in any manner whatsoever,
         and creditors of Participants shall have no right or power to obtain
         all or any portion of grants made hereunder. Any attempted assignment,



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         hypothecation or encumbrance by a Participant shall be null and void.
         Each Participant may, however, designate one or more beneficiaries
         under the Plan on a form to be supplied by the Secretary of the Company


Adopted by the Board on May 4, 1998.


                                               /s/  Craig A. Davis
                                              ----------------------------------
                                                  Craig A. Davis, Chairman

 /s/ Gerald J. Kitchen
- ---------------------------------------
         Gerald J. Kitchen, Secretary


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                                 E X H I B I T  A


Assume a Participant whose base salary is $200,000 is given a 75% Target Award
and that the Company's common stock has an average closing price of $15 in the
month preceding the month in which the grant is made. This Participant would
have a Target Award of 10,000 Performance Shares ($200,000 x 75% / 15 = 10,000).


1.       Award Factor Greater Than Target

         If the Company achieves 105% of Target, the Participant's monetary
         award (pursuant to the Award Factor described in Section 2.B.(1)) would
         be $165,000 ($150,000 x 110%). The $15,000 by which the adjusted
         monetary award exceeds 100% of the target monetary award would be
         converted to Performance Shares as follows:

         a.       If the Company's average stock price in the month preceding
                  the date in which the grant vests is $15 or less, the
                  additional Award would be 1,000 Performance Shares ($15,000 /
                  15 = 1,000), and the Participant's total Award would be 11,000
                  Performance Shares.

         b.       If the Company stock in the month preceding the date in which
                  the grant vests is greater than $15 (e.g. $20), the adjusted
                  Award would be calculated using the higher share value
                  ($15,000 / 20 = 750), and the Participant's total Award in
                  this case would be 10,750 Performance Shares.


2.       Award Factor Less Than Target

         If the Company achieves 90% of Target, the Participant's monetary award
         would be $127,500 ($150,000 x 85% = $127,500), and the Award would be
         8,500 Performance Shares ($127,500 / 15 = 8,500).


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