Document:

EXHIBIT 10.5

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                            CENTURY ALUMINUM COMPANY
                             SUPPLEMENTAL RETIREMENT
                               INCOME BENEFIT PLAN

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                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

Purpose ..................................................................    1

Effective Date ...........................................................    2

Type of Plan .............................................................    2

Eligibility ..............................................................    2

Amount of Supplemental Retirement Income Benefit .........................    2

Vesting ..................................................................    4

Time and Form of URB Payment .............................................    4

Time and Form of Vested ERB Payment ......................................    4

Surviving Spouse ERB Benefit .............................................    5

Source of Benefit Payments ...............................................    5

Administration of the Plan ...............................................    7

Claims and Review Procedure ..............................................    8

Amendment or Termination of the Plan .....................................   11

General Provisions .......................................................   11

Execution ................................................................   12

Appendix A

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                            CENTURY ALUMINUM COMPANY
                             SUPPLEMENTAL RETIREMENT
                               INCOME BENEFIT PLAN

      1. Purpose. The purpose of the Century Aluminum Company Supplemental
Retirement Income Benefit Plan (the "Plan") is:

      (a) To provide an annual retirement benefit for life to certain executives
of Century Aluminum Company and its affiliates (collectively, the "Company"),
equal to any annual benefit which would have accrued to the executive under the
Company's tax qualified defined benefit pension plan covering salaried employees
(the "Pension Plan") if the benefit and compensation limits imposed by
applicable tax law had not applied; and

      (b) To provide enhanced supplemental retirement income benefits for life
to certain executives of the Company whose projected annual retirement income
for life starting at their target retirement age, as determined by the
Compensation Committee of the Board of Directors of the Company ("Compensation
Committee"), ("Target Retirement Age") under the Pension Plan as supplemented by
any benefit described in paragraph (a) above ("Nonenhanced Pension Plan Income")
is estimated to be less than a specified percentage (between 40% and 60%) of the
executive's projected average annual pay (base pay plus annual cash bonus)
during his final year of service ("Targeted Retirement Income") due to the
executive's age and potential years of service at Target Retirement Age.

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      2. Effective Date. The Plan shall be effective as of January 1, 2001
("Effective Date").

      3. Type of Plan. The Plan is intended to be an unfunded plan of deferred
compensation for a select group of management or highly compensated employees.
As such, the Plan is a nonqualified plan for purposes of the Internal Revenue
Code of 1986, as amended (the "Code"), and shall be subject to the provisions of
the Employee Retirement Income Security Act of 1974, as amended ("ERISA") only
to the limited extent required by law.

      4. Eligibility. Any executive of the Company who is designated in writing
as a "Participant" in the Plan by the Compensation Committee shall be eligible
for benefits under the Plan.

      5. Amount of Supplemental Retirement Income Benefit

      (a) Unlimited Pension Benefit (UPB). An annual retirement benefit for life
equal to any annual benefit which would have accrued to a Participant under the
Pension Plan absent certain tax law limitations (the "unlimited pension benefit"
or "UPB"), shall be payable to the Participant under the Plan, the amount of
which shall be determined as follows:

            (i) The limitation on benefits under the Pension Plan with respect
to such Participant under Section 415 of the Code shall be disregarded;

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            (ii) The dollar limitation of Section 401(a)(17) of the Code on the
amount of annual compensation that may be taken into account under the Pension
Plan shall be disregarded; and

            (iii) The annual amount payable to the Participant under the Pension
Plan shall be credited against and shall reduce the UPB payable under Plan.

      (b) Enhanced Retirement Benefit ("ERB"). At the time an executive is
designated as a Participant, the Compensation Committee shall, if applicable,
also specify in writing the percentage to be used by the Company to estimate the
Participant's Targeted Retirement Income and, using the percentage specified
with respect to the Participant, the Company shall estimate the excess of (A)
over (B) based on the Participant's current annual base pay plus his most recent
cash bonus, assuming 5% annual increases in such pay until Target Retirement
Age, where:

      (A) is the Participant's Targeted Retirement Income at Target Retirement
Age; and

      (B) is the Participant's Nonenhanced Pension Plan Income at Target
Retirement Age.

The estimated excess of (A) over (B) shall constitute the amount of the annual
enhanced retirement income benefit payable under the Plan to the Participant for
life if the Participant retires from the Company's employment on or after his
Target Retirement

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Age ("enhanced retirement benefit" or "ERB"). The Participant's ERB shall be
communicated in writing by the Company to the Participant.

      6. Vesting. A Participant's UPB shall be "Vested" to the full extent such
Participant is vested in the Pension Plan. A Participant's ERB shall vest
prorata upon his or her completing the requisite years of service. "Requisite
Years of Service" will be five years as a Participant in the Plan, unless
otherwise determined by the Committee. If a Participant's employment with the
Company terminates by reason of death, disability or a change in control as
defined in Appendix A to the Plan (a "Change in Control"), or after he has
completed the Requisite Years of Service for the Company, the Participant's ERB
shall be fully Vested. If a Participant's employment with the Company terminates
for reasons other than death, disability or a Change in Control and before he
has completed the Requisite Years of Service for the Company, the Participant's
ERB shall be reduced by prorata for each year of such service less than the
Requisite Years of Service, and such reduced ERB shall be his Vested ERB.

      7. Time and Form of URB Payment. A Participant's URB shall be paid at the
same time and in the same manner as the Participant's Pension Plan benefits,
less applicable tax withholdings.

      8. Time and Form of Vested ERB Payment. A Participant's Vested ERB is
payable after he terminates employment with the Company. Any Vested ERB payable
to the Participant shall be paid in cash, less applicable tax withholdings, in
monthly

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installments starting at the time described below and ending with the month in
which he dies. Vested ERB payments shall start at the same time as the
Participant's Nonenhanced Pension Plan Income or, if he is not entitled to any
Nonenhanced Pension Plan Income, the month following the month he terminated
employment with the Company.

      9. Surviving Spouse ERB Benefit. If a Participant dies after payment of
his Vested ERB has begun, the Participant's surviving spouse, if any, shall be
paid in cash, less any applicable tax withholdings, 50% of the monthly
installment payments of the Participant's Vested ERB for the surviving spouse's
remaining lifetime, starting with the month following the month in which the
Participant's died and ending with the month in which the surviving spouse dies.
If a Participant dies before payment of his Vested ERB has begun, the deceased
Participant shall be vested in his ERB to the extent determined by his or her
employment agreement or, if there is no employment agreement, as determined by
the Committee, and such Participant's surviving spouse, if any, shall be paid in
cash, less any applicable tax withholdings, 50% of the monthly installment
payment of the Participant's Vested ERB for the surviving spouse's remaining
lifetime, starting with the month following the month in which the Participant
died and ending with the month in which the surviving spouse dies.

      10. Source of Benefit Payments. The benefits under the Plan shall
constitute an unsecured contractual obligation of the Company to make benefit
payments in the future and, except as provided below, shall be paid from the
general assets of the Company; provided, however, that any life insurance
contracts in which the Company

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invests to help the Company meet its obligations under the Plan shall be held in
a trust for which a bank serves as trustee (the "Trust"), provided that the
Trust shall be subject to the following terms and conditions:

      (a) The Trust shall be an irrevocable "grantor trust", of which the
Company is the "grantor", governed by section 671 et seq. (subpart E, part I,
subchapter J, chapter 1, subtitle A) of the Code.

      (b) The assets of the Trust shall be used exclusively for the uses and
purposes of the Plan and general creditors of the Company in the event of the
Company's insolvency.

      (c) Participants shall have no preferred claim on, or any beneficial
ownership interest in, any assets of the Trust.

      (d) In the event of a possible Change in Control, the Company shall
contribute to the Trust before a Change in Control occurs the amount, if any,
that a professional actuary retained by the Company determines is necessary to
cause the present value of the Trust's assets, including the present cash
surrender value of any life insurance contracts owned by the Trust, to be no
less than the present value of the future benefits payable under the Plan based
on generally accepted actuarial principles and reasonable assumptions at that
time.

      (e) If a professional actuary retained by the Company determines that the
present value of the Trust's assets, including the present cash surrender value
of any life

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insurance contracts owned by the Trust, exceeds 120% of the present value of the
future benefits payable under the Plan based on generally accepted actuarial
principles and reasonable assumptions at that time, the Company may direct the
trustee of the Trust to distribute all or part of such excess (the amount in
excess of 120%) to the Company.

      11. Administration of the Plan

      (a) The Company shall have all powers and discretion necessary or
appropriate to supervise the administration of the Plan and to control its
operation in accordance with its terms, including, but not by way of limitation,
the following discretionary powers:

            (1) To interpret and determine the meaning and validity of the
provisions of the Plan and to determine any question arising under, or in
connection with, the administration, operation or validity of the Plan or any
amendment thereto;

            (2) To determine the status and rights of Participants and their
surviving spouses;

            (3) To employ such counsel, actuaries, agents and advisers, and to
obtain such legal, actuarial, clerical and other services, as it may deem
necessary or appropriate in carrying out the provisions of the Plan;

            (4) To delegate to any one or more of its employees, severally or
jointly, the authority to perform for and on behalf of the Company one or more
of the functions of the Company under the Plan; and

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            (5) To decide all issues and questions regarding the Participants'
and their surviving spouses' benefits under the Plan, and the time, form, manner
and amount of any payments to them.

      (b) All actions, interpretations and decisions of the Committee shall be
conclusive and binding on all persons, and shall be given the maximum possible
deference allowed by law.

      (c) All expenses incurred in the administration of the Plan by the
Company, or otherwise, including legal fees and expenses, shall be paid and
borne by the Company.

      (d) The Company shall, and hereby does, indemnify and hold harmless the
employees of the Company from and against any and all losses, claims, damages or
liabilities (including attorneys' fees and amounts paid, with the approval of
the Board of Directors of the Company, in settlement of any claim) arising out
of or resulting from the implementation of a duty, act or decision with respect
to the Plan, so long as such duty, act or decision does not involve willful
misconduct on the part of any such individual.

      12. Claims And Review Procedure.

      (a) Claims for Benefits. The Company shall determine each Participant's or
a Participant's surviving spouse's right to benefits under the Plan. If a
Participant or a Participant's surviving spouse disagrees with the Company's
determination, he or she may file a written request for review of the
determination, and such request will be

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treated as a claim for benefits hereunder. Any such claim shall be filed with
the Company at the principal executive offices of the Company.

      (b) Denial of Claims. In the event that any claim for benefits is denied,
in whole or in part, the Company shall notify the claimant in writing of such
denial and of the claimant's right to a review thereof. Such written notice
shall set forth, in a manner calculated to be understood by the claimant,
specific reasons for the denial, specific references to the Plan provisions on
which the denial is based, a description of any information or material
necessary to perfect the claim and an explanation of why such material is
necessary, and an explanation of the Plan's procedure for review of denied
claims. Such written notice shall be given to the claimant within 90 days after
the Company receives the claim, unless special circumstances require an
extension of time, up to an additional 90 days, for processing the claim. If
such an extension is required, a written notice indicating the reason an
extension is required and the date by which the Company expects to render its
decision shall be furnished to the claimant before the end of the initial 90-day
period. If written notice of the denial of a claim for benefits, or of the fact
that an extension of time is necessary for processing a claim, is not furnished
within the time specified in this paragraph, the claim shall be deemed to be
denied, and the claimant shall be permitted to appeal such denial in accordance
with the procedure for review of denied claims set forth in paragraph (c) below.

      (c) Review of Denied Claims. Any person whose claim for benefits is denied
(or deemed denied), in whole or in part, or such person's duly authorized
representative,

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may appeal from such denial by submitting a request for a review of the claim to
the Company within 60 days after receiving written notice of the denial (or, in
the case of a deemed denial, within 60 days after the claim is deemed denied).
The Company shall give the claimant or such representative an opportunity to
review pertinent documents that are not privileged in preparing a request for
review. A request for review shall be in writing and shall be addressed to the
Company at the principal executive offices of the Company. A request for review
shall set forth all of the grounds on which it is based, all facts in support of
the request and any other matters the claimant deems pertinent. The Company may
require the claimant to submit such additional facts, documents, or other
material as it may deem necessary or appropriate in making its review.

      (d) Decision on Review. The Company shall act on each request for review
within 60 days after receipt thereof, unless special circumstances require an
extension of time, up to an additional 60 days, for processing the request. If
such an extension is required, written notice of the extension shall be
furnished to the claimant within the initial 60-day period. The Company shall
give prompt, written notice of its decision to the claimant. In the event that
the Company affirms the denial of the claim for benefits, in whole or in part,
such notice shall set forth, in a manner calculated to be understood by the
claimant, specific reasons for the denial and specific references to the Plan
provisions upon which the decision is based. If written notice of the Company's
decision on a request for review, or of the fact that an extension of time is
necessary for processing a

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request, is not given to the claimant within the time prescribed in this
paragraph, the claim shall be deemed to have been denied on review.

      13. Amendment or Termination of the Plan

      (a) The Company, with the approval of the Compensation Committee, reserves
the right to amend or terminate the Plan, or any part thereof, in such manner as
it may determine, at any time and for any reason. Notwithstanding the preceding
sentence, however, no amendment or termination of the Plan shall reduce any
Participant's benefits under the Plan as of the date the amendment is adopted or
the Plan is terminated, as appropriate, including the timing of such benefit
payments.

      (b) If the Plan is terminated, the benefits under the Plan shall be
distributed in accordance with the terms of the Plan prior to its termination.

      14. General Provisions.

      (a) Inalienability. In no event may a Participant, his spouse or estate
sell, transfer, anticipate, assign, hypothecate or otherwise dispose of any
right or interest under the Plan or the Trust; and such rights and interests
shall not at any time be subject to the claims of their creditors nor be liable
to attachment, execution or other legal process.

      (b) No Enlargement of Employment Rights. Neither the establishment or
maintenance of the Plan shall be held or construed to confer upon any individual
any right to be continued as an employee of the Company nor, upon dismissal, any
right or

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interest in any specific assets of the Company. The Company expressly reserves
the right to discharge any employee at any time.

      (c) Applicable Law. The provisions of the Plan shall be construed,
administered and enforced in accordance with ERISA, and to the extent not
preempted by ERISA, the laws of the State of California.

      15. Execution. To record the adoption of the Plan effective as of January
1, 2001, Century Aluminum Company has caused this document to be executed on its
behalf by its duly authorized officer.

Dated:  December 13 , 2001                  CENTURY ALUMINUM COMPANY

                                                   /s/ Gerald J. Kitchen
                                            --------------------------------
                                            By:    Gerald J. Kitchen
                                            Title: Executive Vice President,
                                                   General Counsel, Chief
                                                   Administrative Officer and
                                                   Secretary

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                                   APPENDIX A
                         TO THE CENTURY ALUMINUM COMPANY
                             SUPPLEMENTAL RETIREMENT
                               INCOME BENEFIT PLAN

      For purposes of the Plan, a "Change in Control" shall mean any of the
following events:

      (a) An acquisition (other than directly from the Company) of any voting
securities of the Company (the "Voting Securities") by any "Person" as the term
person is used for purposes of Section 13(d) or 14(d) of the Securities Exchange
Act of 1934, as amended (the "1934 Act") immediately after which such Person has
"Beneficial Ownership" (within the meaning of Rule 13d-3 promulgated under the
1934 Act) of twenty percent (20%) or more of the combined voting power of the
Company's then outstanding Voting Securities; provided, however, that in
determining whether a Change in Control has occurred, Voting Securities which
are acquired in a Non-Control Acquisition (as hereinafter defined) shall not
constitute an acquisition which would cause a Change in Control. A "Non-Control
Acquisition" shall mean an acquisition by (1) an employee benefit plan (or a
trust forming a part thereof) maintained by (x) the Company or (y) any
corporation or other Person of which a majority of its voting power or its
equity securities or equity interest is owned directly or indirectly by the
Company (a "Subsidiary"), (2) the Company or any Subsidiary, or (3) any Person
in connection with a Non-Control Transaction (as hereinafter defined);
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      (b) The individuals who, as of the date hereof, are members of the Board
of Directors of the Company (the "Incumbent Board"), cease for any reason to
constitute at least two-thirds of the Board of Directors of the Company (the
"Board"); provided, however, that if the election, or nomination for election by
the Company's stockholders, of any new director was approved by a vote of at
least two-thirds of the Incumbent Board, such new director shall, for purposes
of this definition, be considered a member of the Incumbent Board; provided,
however, that no individual shall be considered a member of the Incumbent Board
if such individual initially assumed office as a result of either an actual or
threatened "Election Contest" (as described in Rule 14a-11 promulgated under the
1934 Act) or other actual or threatened solicitation of proxies or consents by
or on behalf of a Person other than the Board (a "Proxy Contest") including by
reason of any agreement intended to avoid or settle any Election Contest or
Proxy Contest; or

      (c) Approval by stockholders of the Company of:

            (1) A merger, consolidation or reorganization involving the Company,
unless

                  (i) the stockholders of the Company, immediately before such
merger, consolidation or reorganization, own, directly or indirectly immediately
following such merger, consolidation or reorganization, at least seventy percent
(70%) of the combined voting power of the outstanding voting securities of the
corporation

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resulting from such merger or consolidation or reorganization (the "Surviving
Corporation") in substantially the same proportion as their ownership of the
Voting Securities immediately before such merger, consolidation or
reorganization,

                  (ii) the individuals who were members of the Incumbent Board
immediately prior to the execution of the agreement providing for such merger,
consolidation or reorganization constitute at least two-thirds of the members of
the board of directors of the Surviving Corporation, and

                  (iii) no Person (other than the Company, any Subsidiary, any
employee benefit plan (or any trust forming a part thereof) maintained by the
Company, the Surviving Corporation or any Subsidiary, of any Person who,
immediately prior to such merger, consolidation or reorganization, had
Beneficial Ownership of fifteen percent (15%) or more of the then outstanding
Voting Securities) has Beneficial Ownership of fifteen percent (15%) or more of
the combined voting power of the Surviving Corporation's then outstanding voting
securities (a transaction described in clauses (i) through (iii) above shall
herein be referred to as a "Non-Control Transaction");

            (2) A complete liquidation or dissolution of the Company; or

            (3) An agreement for the sale or other disposition of all or
substantially all of the assets of the Company to any Person (other than a
transfer to a Subsidiary).

Notwithstanding the foregoing, a Change of Control shall not be deemed to occur
solely because any Person (the "Subject Person") acquired Beneficial Ownership
of more than

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the permitted amount of the outstanding Voting Securities as a result of the
acquisition of Voting Securities by the Company which, by reducing the number of
Voting Securities outstanding, increases the proportional number of shares
Beneficially Owned by the Subject Person, provided that if a Change in Control
would occur (but for the operation of this sentence) as a result of the
acquisition of Voting Securities by the Company, and after such share
acquisition by the Company, the Subject Person becomes the Beneficial Owner of
any additional Voting Securities which increases the percentage of the then
outstanding Voting Securities beneficially owned by the Subject Person, then a
Change in Control shall occur.

      (d) Solely for purposes of this Change in Control definition, "Company"
shall mean Century Aluminum Company.

                                       4EXHIBIT 10.6
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                            ALUMINA SUPPLY AGREEMENT

                     (Glencore Contract No. 161.01.57337-S)

      THIS ALUMINA SUPPLY AGREEMENT (this "Agreement") is entered into as of
January 1, 2001, by GLENCORE LTD., a Swiss corporation, and CENTURY ALUMINUM OF
WEST VIRGINIA, INC., a Delaware corporation.

                                    RECITALS

      WHEREAS, the parties desire to sell and purchase alumina pursuant to the
terms provided herein.

      NOW, THEREFORE, the parties, intending to be legally bound, agree as
follows:

                                    ARTICLE I
                                   DEFINITIONS

      Section 1.1 Defined Terms. In this Agreement, the following words have the
following meanings:

      "Alumina" means metallurgical grade alumina produced at Point Comfort,
Texas, USA, any Jamaica refinery (Alpart, Aljam and Jamalco) or at Gramercy,
Louisiana, USA or other mutually agreed origins.

      "Bill of Lading Date" means the date of completion of loading for the
particular shipment in question.

      "Buyer" means Century Aluminum of West Virginia, Inc.

      "CIF" means CIF as defined in Incoterms 2000, published by the
International Chamber of Commerce, Paris, France.

      "Dollars" or "$" means United States of America dollars.

      "MT" means metric tons of 1,000 kilograms each.

      "Month" means a calendar month.

      "Ravenswood" means the aluminum smelter located at Ravenswood, West
Virginia, USA.

      "Seller" means Glencore Ltd.
<PAGE>

                                   ARTICLE II
                                     ALUMINA

      Section 2.1 Term. This Agreement commences on the date hereof and, unless
terminated earlier pursuant to the terms of this Agreement, ends 30 days after
final delivery of the quantity specified.

      Section 2.2 Quantity. Seller agrees to sell and Buyer agrees to purchase a
total of 1,625,000 MT of Alumina beginning January 1, 2002 and continuing until
the quantity specified has been shipped under the following schedule:

           January - December, 2002                 325,000 MT
           January - December, 2003                 325,000 MT
           January - December, 2004                 325,000 MT
           January - December, 2005                 325,000 MT
           January - December, 2006                 325,000 MT

The amount of any annual quantity is subject to a tolerance of one barge load of
approximately one thousand five-hundred (1,500) MT for shipping purposes.

      Section 2.3 Origin/Quality. Alumina supplied under this Agreement will
comply with the guaranteed specifications for the applicable origin of Alumina
set forth on Exhibits A-E hereto. If Seller's supplier changes the
specifications for Alumina produced by such supplier, Seller may propose that
Buyer accept Alumina conforming to such revised specifications under this
Agreement and Buyer shall not unreasonably withhold such consent. Seller will
deliver a single origin per calendar year and will declare the origin to Buyer
by October 31 of the prior year. SELLER MAKES NO OTHER WARRANTY, EXPRESS OR
IMPLIED, WITH RESPECT TO THE PRODUCT SOLD HEREUNDER AND, SPECIFICALLY, SELLER
MAKES NO WARRANTY THAT THE PRODUCT WILL BE MERCHANTABLE OR FIT FOR ANY
PARTICULAR PURPOSE.

      Section 2.4 Price. The price that Buyer shall pay per MT of Alumina CIF
Ravenswood Dock, Ohio River under this Agreement will be [CONFIDENTIAL
INFORMATION HAS BEEN OMITTED FROM THIS EXHIBIT PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT AND FILED SEPARATELY WITH THE COMMISSION] % of the LME
Price. The LME Price is the cash seller (settlement) price for 99.7 percent
purity aluminum in Dollars quoted by the London Metal Exchange as published in
the Metal Bulletin under the caption "Metal Bulletin (month) Averages" in the
section "London Metal Exchange high, low and average (month) (days)" in the
column "(month) Average" for the quotational period. For each calendar year
there shall be twelve (12) quotational periods of one Month each which shall be
the twelve (12) Months commencing December 1 of the calendar year prior to such
calendar year. For purposes of pricing the Alumina to be supplied under this
Agreement, 27,083 MT (1/12 of 325,000 MT) of Alumina shall be priced in each
quotational period, irrespective of the date of physical shipment.

      Section 2.5 Payment. Payment shall be made in Dollars by wire transfer no
later than 30 days after the Bill of Lading Date to the account specified by
Seller. Seller shall deliver to

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Buyer the following documents with respect to each shipment: (a) Bill of Lading,
(b) invoice, (c) draft survey report, (d) certificate of origin, (e) certificate
of analysis, (f) certificate of insurance and (g) statement of facts.

      Section 2.6 Delivery. Alumina will be delivered CIF Ravenswood Dock, Ohio
River in suitable roll-top barges. Deliveries will be reasonably evenly spread
throughout the year. Before October 31 of each calendar year, Seller and Buyer
shall agree to a tentative delivery schedule for the following calendar year.
Not later than 30 days before the beginning of each calendar quarter, Seller and
Buyer shall agree to an exact schedule for such calendar quarter.

                                  ARTICLE III
                               GENERAL PROVISIONS

      Section 3.1 Weighing. Cargo weights will be determined by an independent
draft survey at the load port onto ship (Jamaica) or barge (Point Comfort and
Gramercy) and such weight determinations will be conclusive for the final
settlement for each load. Without prejudice to the foregoing, cargo weights for
shipments from Jamaica will also be weighed for information purposes when such
shipments are transferred from the ship to the barges.

      Section 3.2 Sampling. Representative samples to determine the quality for
each shipment of Alumina will be taken during the loading operation, according
to the standard methods being applied at the load port. Two equal portions of
each final sample will be placed in sealed containers and duly marked. One
portion shall be sent to Buyer by air express, along with the report of analysis
(which shall also be telecopied to Buyer), and the other shall be sealed and
held by Seller. The material is deemed to comply with the applicable
specification of the relevant alumina production facility, unless Buyer notifies
Seller, within 30 days of receipt of the material, that the material delivered
does not conform to the applicable specification and the nature of that
non-conformity. Seller will then advise Buyer, within 15 days, whether or not
Seller agrees with Buyer's analysis. In case of disagreement between Seller and
Buyer about the material's conformity, the sample retained by Seller will be
analyzed by a referee laboratory agreeable to Buyer and Seller. The result of
the referee analysis will be definitive and binding for both parties. The cost
of such analysis will be borne by the party whose results differ most from those
given by the mutually agreeable referee laboratory. If chemical impurities
and/or physical specifications exceed the applicable specification of the
relevant alumina production facility, the parties shall meet to reach an
amicable settlement to compensate Buyer. If an amicable settlement cannot be
reached, the dispute shall be referred to arbitration pursuant to Section 3.15.

      Section 3.3 Barging and Discharge Requirements. Seller will arrange, at
its expense, for the barges necessary to transport the product to the Ravenswood
Dock. Seller will be responsible for payments to the operators of the barges and
for all port or other charges incurred.

      Section 3.4 Title, Ownership and Risk of Loss. Buyer shall have title to
and risk of loss from the time the Alumina crosses the ship's or barge's rail
while loading onto the ship or barge.

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<PAGE>

      Section 3.5 Taxes, Royalties and Duties. All royalties, taxes and duties
imposed or levied on Alumina delivered hereunder shall be for the account of and
paid by Seller or Buyer, as the case may be, in accordance with CIF deliveries.

      Section 3.6 Limitation of Liability. Except as provided herein, Seller's
liability is limited to direct losses suffered by Buyer. Seller is not liable
for incidental or consequential losses or damages. Except as provided in Exhibit
F, in no event will Seller's liability for each shipment hereunder exceed the
value of such shipment.

      Section 3.7 Force Majeure.

            (a) Except as provided in this Section, neither party will be liable
for failure to comply with any term (other than those relating to payment
obligations) of this Agreement if hindered, delayed, or prevented, directly or
indirectly, by any circumstances outside its reasonable control, including but
not limited to war, conditions of war, acts of enemies, national emergency,
sabotage, revolution, riots or other similar disorders; failure of
transportation; fire, flood, windstorm, explosion, or other acts of God;
strikes, lock-outs or other labor disturbances; breakdown of plants; orders or
acts of any government or governmental agency or authority; interference by
civil or military authority; the inability of Seller to obtain Alumina from its
supplier; or the inability of Buyer to obtain power.

            (b) The party invoking this provision must give prompt written
notice to the other party after the occurrence of any such circumstances and
must state the probable extent to which it will be unable to perform or will be
delayed in performing its obligations hereunder. Such party must exercise due
diligence to eliminate or remedy any such circumstances which delay or interrupt
its performance; provided, however, that the settlement of strikes or other
events of labor unrest will be entirely within the discretion of the party
having the difficulty and that such party will not be required to settle such
strikes or labor unrest by acceding to the demands of the opposing party when
such course of action is deemed inadvisable in the discretion of the party
having the difficulty.

            (c) In the event of force majeure affecting Seller, Buyer may elect
to either: (i) extend the term of this Agreement to the extent that Seller has
invoked this provision (in which event the price for Alumina in effect for the
extended term shall be the same as the price in effect for Alumina scheduled to
be delivered but not delivered during the event of force majeure); or (ii)
purchase from other suppliers quantities of Alumina which Seller is or expects
to be unable to deliver, and Seller shall not be liable to Buyer for any cost,
expense or loss whatsoever of Buyer arising out of any purchase it may make from
other suppliers. Buyer shall give Seller written notice of such purchases, and
they shall be deducted from the quantity required to be purchased hereunder.

            (d) In the event of force majeure affecting Buyer, Seller may elect
to either: (i) extend the term of this Agreement to the extent that Buyer has
invoked this provision (in which event the price for Alumina in effect for the
extended term shall be the same as the price in effect for Alumina scheduled to
be delivered but not delivered during the event of force majeure); or (ii) sell
to other buyers quantities of Alumina which Buyer is or expects to be unable to
accept, and Buyer shall not be liable to Seller for any cost, expense or loss
whatsoever

                                       4
<PAGE>

of Seller arising out of such sales. Seller shall give Buyer written notice of
such sales, and they shall be deducted from the quantity required to be
purchased hereunder.

            (e) Notwithstanding the foregoing provisions, in the case of an
event of force majeure affecting Buyer which continues for a period of six (6)
consecutive months or more, then Seller may elect at any time thereafter to
terminate this Agreement with immediate effect, provided that the event of force
majeure is continuing as of the date of such notice, by sending notice to Buyer
as provided in this Agreement announcing exercise of such right of termination.
Notwithstanding the foregoing provisions, in the case of an event of force
majeure affecting Seller which continues for a period of six (6) consecutive
months or more, then Buyer may elect at any time thereafter to terminate this
Agreement with immediate effect, provided that the event of force majeure is
continuing as of the date of such notice, by sending notice to Seller as
provided in this Agreement announcing exercise of such right of termination.
Alternatively, in the case of an event of force majeure which continues for a
period of six (6) consecutive months or more, the party not affected by the
event of force majeure may continue to exercise its rights as set forth in
subparagraph (c) or (d) above, as applicable, and not exercise the right of
termination provided in this subparagraph (e).

      Section 3.8 Termination. This Agreement may be terminated prior to
expiration of its term: (a) by mutual agreement of the parties; (b) by either
party, if the other party or any of its subsidiaries shall generally not pay its
respective debts as such debts become due, or shall admit in writing its
inability to pay its debts generally, or shall make a general assignment for the
benefit of creditors; or any proceeding shall be instituted by or against such
party or any of its subsidiaries seeking to adjudicate it a bankruptcy or
insolvent, or seeking liquidation, winding up, reorganization, arrangement,
adjustment, protection, relief, or composition of it or its debts under any law
relating to bankruptcy, insolvency or reorganization or relief of debtors, or
seeking the entry of an order for relief or the appointment of a receiver,
trustee, custodian or other similar official for it or for any substantial part
of its property and, in the case of any such proceeding instituted against it
(but not instituted by it), either such proceeding shall remain undismissed or
unstayed for a period of 60 days, or any of the actions sought in such
proceeding (including, without limitation, the entry of an order for relief
against, or the appointment of a receiver, trustee, custodian or other similar
official for, it or for any substantial part of its property) shall occur; or
such party or any of its subsidiaries shall take any corporate action to
authorize any of the actions set forth in this subsection (b) under any law
relating to bankruptcy, insolvency or reorganization or relief of debtors; or
(c) by either party, if such party is not in default under this Agreement and
the other party has breached or failed to perform any of its material covenants
and agreements under this Agreement and such breach or failure continues for 30
days after notice thereof by the non-defaulting party (or 10 days after notice
thereof if such default is a default of a payment obligation).

      Section 3.9 Failure to Accept Delivery and Failure to Deliver.

            (a) If Buyer fails to accept delivery for any reason other than an
event of force majeure, Seller shall be entitled to (i) sell to other buyers the
Alumina which Buyer is or expects to be unable to accept, in which event Buyer
shall be liable to Seller for any cost, expense or loss arising out of such
sales; or (ii) extend the term of this Agreement. If Seller elects to extend the
term of this Agreement, the price for Alumina in effect for the extended term
shall be the same

                                       5
<PAGE>

as the price in effect for Alumina scheduled to be delivered but which Buyer was
unable to accept. Buyer shall give Seller written notice immediately upon
anticipating an inability to accept delivery. Buyer's liability for failure to
accept delivery shall be limited to the value of the quantity of Alumina which
Buyer is unable to accept.

            (b) If Seller fails to deliver for any reason other than an event of
force majeure, Buyer shall be entitled to (i) purchase from other sellers the
Alumina which Seller is or expects to be unable to deliver, in which event
Seller shall be liable to Buyer for any additional cost, expense or loss arising
out of such purchases; or (ii) extend the term of this Agreement. If Buyer
elects to extend the term of this Agreement, the price for Alumina in effect for
the extended term shall be same as the price in effect for Alumina scheduled to
be delivered but which Seller was unable to deliver. Seller shall give Buyer
written notice immediately upon anticipating an inability to deliver. Seller's
liability for failure to deliver shall be limited to the value of the quantity
of Alumina which Seller is unable to deliver.

      Section 3.10 Notices. All notices or communications required or permitted
hereunder must be in writing and will be deemed to have been duly given when
received or when transmitted by facsimile and confirmed by written receipt if
sent to the address and facsimile numbers below (or at such other address as a
party may subsequently designate to the other in writing by notice given in
accordance with this Section):

If to Buyer:                   Century Aluminum of West Virginia, Inc.
                               Route 2 South
                               Ravenswood, WV  26164
                               Attention:  Purchasing Manager
                               Fax:  304-273-7108

with a copy to:                Century Aluminum Company
                               2511 Garden Road
                               Suite 200, Building A
                               Monterey, CA 93940
                               Attention:  General Counsel
                               Fax:  831-642-9080

If to Seller:                  Glencore Ltd.
                               Three Stamford Plaza
                               301 Tresser Blvd.
                               Stamford, CT  06901-3244
                               Attention: Alumina Department
                               Fax:  203-353-2765

Certain notices, however, must be delivered by overnight or express courier or
in person to be effective. These notices are notices of default, cancellation or
termination under Section 3.7 or 3.8; and arbitration under Section 3.15.

                                       6
<PAGE>

      Section 3.11 Precedence. In the event of any inconsistency between this
Agreement and the terms of any other document specific to the transaction or
delivery in question, the terms of this Agreement will govern.

      Section 3.12 Severability. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction and which is not material in
implementing the intentions of the parties shall, as to such jurisdiction, be
ineffective only to the extent of such prohibition or unenforceability without
invalidating the remaining provisions or affecting the validity or
enforceability of any provision in any other jurisdiction.

      Section 3.13 Assignment. Subject to the further provisions of this Section
3.13, this Agreement shall be binding upon the parties and their successors and
assigns. No party may assign this Agreement or any rights and duties hereunder
without the prior written consent of the other party (and such consent will not
be unreasonably withheld), and any purported assignment without such written
consent will be null and void; provided, however, that either party may assign
this Agreement and its rights hereunder to any affiliate, subsidiary or parent
company, without the consent of the other, but in any such event, the assigning
party shall not be relieved of its obligations hereunder.

      Section 3.14 Governing Law. This Agreement will be governed by and
construed in accordance with the laws of the State of New York, U.S.A.,
excluding those relating to choice or conflicts of law and excluding the United
Nations Convention or Contracts for the International Sale of Goods.

      Section 3.15 Arbitration. Any controversy or claim arising out of or
relating to this Agreement, or the breach thereof, shall be settled by
arbitration administered by the American Arbitration Association under its
Commercial Arbitration Rules, and judgment on the award rendered by the
arbitrators may be entered in any court having jurisdiction thereof. There shall
be three arbitrators, and the arbitration shall be conducted in the English
language in New York, New York, U.S.A.

      Section 3.16 Waiver. No party will be deemed to have waived any right,
power or privilege under this Agreement unless such waiver is in writing and
duly executed by it. No failure or delay in exercising any right hereunder will
be deemed a waiver thereof by any party. No exercise or partial exercise of any
right, power or privilege will preclude any other or further exercise thereof or
of any other right, power or privilege.

      Section 3.17 Entire Agreement. This Agreement including the Exhibits
hereto, is the exclusive and complete agreement between the parties with respect
to the subject matter hereof, sets forth their entire understanding and merges
all prior and contemporaneous writings, representations and understandings
between the parties, including but not limited to that certain letter between
the parties dated January 17, 2001. This Agreement may be amended only by
another written agreement duly signed by the parties.

      Section 3.18 Possible Extension. The parties agree to meet during 2005 to
discuss a five-year extension or renewal of this Agreement upon mutually
satisfactory terms and conditions.

                                       7
<PAGE>

      IN WITNESS WHEREOF, the parties hereto have caused their duly authorized
representatives to execute this Agreement.

CENTURY ALUMINUM OF WEST VIRGINIA, INC.

By:             /s/ Gerald J. Kitchen
                --------------------------
Name:           Gerald J. Kitchen
Title:          Vice President

GLENCORE LTD.

By:             /s/ Andrew Bentley
                --------------------------
Name:           Andrew Bentley
Title:

                                       8
<PAGE>

                                                                       EXHIBIT A

                      POINT COMFORT ALUMINA SPECIFICATIONS

Chemical Specifications                       Typical           Guaranteed
                                                (%)                (%)

SiO(2)                                        0.013       0.020              max
Fe(2)O(3)                                     0.009       0.015               "
Na(2)O                                        0.32        0.45                "
CaO                                           0.024       0.045               "
TiO(2)*                                       0.001       0.005               "
ZnO                                           0.001       0.010               "
P(2)O(5)*                                     0.001       0.005               "
V(2)O(5)                                      0.001       0.005               "
Ga(2)O(3)                                     0.009       0.020               "

Physical Specifications

+100 mesh                                     2           10                 max
-325 mesh                                     8           12                  "
-20 micron                                    1.0         3.0                 "
L.O.I. (300-1200(degree)C)*                   0.89        1.20                "

                                              m^2/g       m^2/g
Surface Area (BET)                            70          60 min - 80 max

*Based on routine spot checks (not every shipment).

<PAGE>

                                                                       EXHIBIT B

                          ALPART ALUMINA SPECIFICATIONS

                             (Port Kaiser / Jamaica)

                                                        PRODUCER
                                    TYPICAL            GUARANTEES
                                    -------            ----------

A1203                              %    98.500       98.2000           MIN
SiO(2)                             %     0.014        0.0170           MAX
Fe(2)O(3)                          %     0.008        0.0150           MAX
TiO(2)                             %     0.001        0.0030           MAX
V(2)O(5)                           %     0.003        0.0045           MAX
Na(2)O                             %     0.450        0.6000           MAX
CaO                                %     0.053        0.0600           MAX
P(2)O(5)                           %     0.001        0.0015           MAX
ZnO                                %     0.010        0.0120           MAX
MnO(2)                             %     0.001        0.0020           MAX

LOI (300 - 1000 C)                 %     0.80         1.20             MAX
+ 100 Mesh                         %     3.70        10.00             MAX
- 325 Mesh                         %     8.50        10.00             MAX
- 20 microns                             1.40
BET m2/gr                               72.00        60 MIN / 85       MAX
Alpha Phase                        %    11.00

<PAGE>

                                                                       EXHIBIT C

                          ALJAM ALUMINA SPECIFICATIONS

                             CHEMICAL SPECIFICATIONS

                                          TYPICAL                  MAXIMUM
                                          -------                  -------

      Na(2)O                              0.42%                     0.60%
      Fe(2)O(3)                           0.007%                    0.030
      CaO                                 0.04%                     0.070
      SiO(2)                              0.018%                    0.030
      TiO(2)                              0.001%                    0.005
      V(2)O(5)                            0.001%                    0.005
      ZnO                                 0.008%                    0.020
      P(2)O(5)                            0.001%                    0.009%

                             PHYSICAL SPECIFICATIONS

      BET (SSA)                            80 / 90 m^2/g (range)
      LOI (300(degree)- 1100(degree)C)     0.95%                    1.2 MAX
      -325 TYLER MESH                      8.0%                     12% MAX
<PAGE>

                                                                       EXHIBIT D

                         JAMALCO ALUMINA SPECIFICATIONS

                             (Rocky Point / Jamaica)

                                                                    PRODUCER
                                              TYPICAL              GUARANTEES
                                              -------              ----------

      SiO(2)                        %          0.012             0.020    MAX
      Fe(2)O(3)                     %          0.012             0.020    MAX
      TiO(2)                        %          0.002             0.005    MAX
      V(2)O(5)                      %          0.002             0.005    MAX
      Na(2)O                        %          0.380             0.500    MAX
      CaO                           %          0.036             0.050    MAX
      P(2)O(5)                      %          0.0014            0.003    MAX
      ZnO                           %          0.013             0.020    MAX

      LOI (300 - 1200 C)            %          0.90              1.10     MAX
      + 100 Mesh                    %          3.00             15.00     MAX
      - 325 Mesh                    %          8.00             12.00     MAX
      BET m^2/gr                              70.00          65 MIN / 80  MAX

<PAGE>

                                                                       EXHIBIT E

                         GRAMERCY ALUMINA SPECIFICATIONS

PRODUCT SPECIFICATIONS:

             Chemical Properties           % Typical               % Maximum
                      Si                       0.007                   0.012
                      Fe                       0.007                   0.011
                      Na                       0.35                    0.50
                      Mn                       0.0011                  0.002
                      Zn                       0.009                   0.015
                      Ca                       0.026                   0.035

             Physical Properties
             LOI (300 - 1000(degree)C)         0.85                   1.20
                  + 100 Mesh                   6.0                    10.0
                  - 325 Mesh                   5.0                    10.0

<PAGE>

                                                                       EXHIBIT F

                           NON-CONFORMITY OF ALUMINA

            It is the intention of Seller that all Alumina delivered to Buyer
pursuant to this Agreement shall conform to the specifications contained in
Exhibits A-E, but if any such Alumina does not conform, the following provisions
shall apply.

            If any Alumina delivered hereunder does not conform to the
guaranteed specifications, Buyer's sole remedy and Seller's sole liability
arising out of the failure of such Alumina to conform to the specifications
shall be either:

            (a) Buyer shall have the option of accepting the Alumina at a
reduced price to be negotiated in good faith by the parties, or

            (b) If Buyer does not exercise such option or the parties fail to
reach agreement on the reduced price for such Alumina, Buyer shall have the
option, to be exercised within a reasonable time, to cause Seller to replace the
Alumina at no cost to Buyer with a like quantity of Alumina that conforms to the
specifications.

If Buyer elects replacement, Seller shall use its best efforts to do so within
the shortest possible time (including, without limitation, purchasing conforming
alumina from third parties). In such event, Seller shall deliver the replacement
Alumina to Buyer at the Ravenswood Dock, Ohio River. Buyer shall make the
non-conforming Alumina available to Seller at such port (with all additional
expenses reasonably incurred by Buyer in so making the non-conforming Alumina
available to Seller being for the account of Seller).

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