| 1.   | Clause      (x) of subsection 8.2.2 of the Loan Agreement is hereby deleted and      replaced in its entirety asfollows: |
|----------------|--------------------------------------------------------------------------------------------------------------------------|

| 2.   | This      Amendment shall be effective as of the date hereof (the “Effective      Date”), but only upon the satisfaction of the following conditions      precedent: |
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| (a)   | Agent      shall have received a duly executed copy of this Amendment from each of      the Borrowers and the MajorityLenders. |
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| (b)   | The      representations and warranties of the Borrowers and Guarantors set forth      in each of the Loan Documents shall be true and correct in all material      respects on and as of the Effective Date with the same effect as though      made on and as of such date (except to the extent such representations and      warranties by their terms expressly relate to an earlier date, in which      case such representations and warranties shall have been true and correct,      in all material respects, as of such earlier  date). |
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| (c)   | No      Default or Event of Default shall have occurred and be continuing as of      the Effective Date. |
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| (d)   | The      Borrowers shall have paid the costs, fees and expenses referred to in      Section 3      hereof. |
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| 3.   | The      Borrowers jointly and severally agree to reimburse the Agent upon demand      for all reasonable and documented costs, fees and expenses (including the      reasonable fees and expenses of counsel to the Agent) incurred in      connection with the preparation, execution and delivery of this      Amendment. |
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| 4.   | The      amendments set forth herein are effective solely for the purposes set      forth herein and shall be limited precisely as written, and shall not be      deemed to (i) be a consent to, or acknowledgment of, any amendment, waiver      or modification of any other term or condition of the Loan Agreement or of      any other instrument or agreement referred to herein or therein or (ii)      prejudice any right or remedy which the Agent or any other party may now      have or may have in the future under or in connection with the Loan      Agreement as amended hereby or any other instrument or agreement referred      to therein.  This Amendment is a Loan Document executed pursuant      to the Loan Agreement and shall be construed in connection with and as      part of the Loan Agreement, and all terms, conditions, representations,      warranties, covenants and agreements set forth in the Loan Agreement, each      other Loan Document and each other instrument or agreement referred to      therein, except as herein amended, are hereby ratified and confirmed and      shall remain in full force and effect.  Neither this Amendment      nor the replacement of the terms of the Loan Agreement by the terms of      this Amendment shall extinguish the obligations for the payment of money      outstanding under the Loan Agreement or discharge or release the Lien or      priority of any security agreement, pledge agreement, or other security      therefor.  Nothing herein contained shall be construed as a      substitution or novation of the Obligations outstanding under the Loan      Agreement or instruments securing the same, which shall remain in full      force and effect, except as modifiedhereby. |
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| 5.   | To      induce Agent and each Lender to enter into this Amendment, Borrowers      represent and warrant to Agent and each Lender, on a joint and several      basis, that: (a) the execution, delivery and performance by each Borrower      of this Amendment have been duly authorized by all necessary corporate or      other relevant action and do not and will not:  (i) contravene,      violate or result in a breach of or default under (A) any Borrower’s      charter, articles or certificate of incorporation, certificate of      formation, bylaws, limited liability company or partnership agreement, or      other organizational documents (as the case may be), (B) any provision of      any law, rule, regulation, order of any Governmental Authority, writ,      judgment, injunction, decree, determination or award in effect having      applicability to such Borrower, the violation of which would reasonably be      expected to have a Material Adverse Effect, or (C) any indenture or loan      or credit agreement or any other agreement, lease or instrument binding on      a Loan Party or its Properties, the breach of or default under which would      reasonably be expected to have a Material Adverse Effect; or (ii) result      in, or require, the creation or imposition of any Lien (other than      Permitted Liens) upon or with respect to any of the Collateral now owned      or hereafter acquired by such Loan Party; and (b) this Amendment and the      Loan Agreement as amended hereby are legal, valid and binding obligations      of each Borrower, enforceable against it in accordance with its respective      terms, except as such enforceability may be limited by applicable      bankruptcy, insolvency, reorganization, fraudulent conveyance, or      fraudulent transfer laws, or other similar laws affecting creditors’      rights generally, and by general principles of equity (regardless of      whether such enforceability is considered in a proceeding in equity or at      law). |
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| 6.   | This      Amendment may be executed in any number of counterparts and by different      parties hereto in separate counterparts, each of which when so executed      and delivered shall be deemed to be an original and all of which      counterparts taken together shall constitute but one and the same      instrument. |
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| 7.   | Wherever      possible, each provision of this Amendment shall be interpreted in such      manner as to be effective and valid under applicable law, but if any      provision of this Amendment shall be prohibited by or invalid under      applicable law, such provision shall be ineffective only to the extent of      such prohibition or invalidity, without invalidating the remainder of such      provision or the remaining provisions of this  Amendment. |
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| 8.   | THIS      AMENDMENT HAS BEEN NEGOTIATED, EXECUTED AND DELIVERED IN AND SHALL BE      DEEMED TO HAVE BEEN MADE IN NEW YORK, NY.  THIS AMENDMENT SHALL      BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF      NEW YORK. |
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----

| BORROWERS                    |
|-----------------------------------|
| NSA      GNERAL PARTNERSHIP  |
| By:                               | CENTURY      KENTUCKY INC. |
| Its:                              | General      Partner |
|                              |   |   |
| By:                               | /s/ Michelle      Lair                                                  |
|                              | Name: | Michelle      Lair |
|                              | Title: | VP      & Treasurer |

| By:    | SKYLINER      LLC                                                                                                                                                                                                                                                                                                             |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Its:   | General      Partner                                                                                                                                                                                                                                                                                                          |
|   |                                                                                                                                                                                                                                                                                                                          |   |
| By:    | /s/ Michelle Lair                                                   |
|   | Name:                                                                                                                                                                                                                                                                                                                         | Michelle      Lair |
|   | Title:                                                                                                                                                                                                                                                                                                                        | VP      & Treasurer |

| CENTURY      ALUMINUM COMPANY |
|-------------------------------|
|  By:                     |  /s/ Michelle      Lair                                                   |
|                          | Name: | Michelle      Lair |
|                          | Title: | VP      & Treasurer |

| BERKELEY      ALUMINUM INC. |
|-----------------------------|
|  By:                   |  /s/ Michelle      Lair                                                   |
|                        | Name: | Michelle      Lair |
|                        | Title: | VP      & Treasurer |

| CENTURY      ALUMINUM OF WEST VIRGINIA, INC. |
|----------------------------------------------|
|  By:                                    |  /s/ Michelle      Lair                                                   |
|                                         | Name: | Michelle      Lair |
|                                         | Title: | VP      & Treasurer |

| CENTURY      KENTUCKY, INC. |
|-----------------------------|
|  By:                   |  /s/ Michelle      Lair                                                   |
|                        | Name: | Michelle      Lair |
|                        | Title: | VP      & Treasurer |

| CENTURY      ALUMINUM OF KENTUCKY GENERAL PARTNERSHIP |
|-------------------------------------------------------|
| By:                                                   | METALSCO      LLC |
| Its:                                                  | General      Partner |
|                                                  |   |   |
| By:                                                   | /s/ Michelle      Lair                                                   |
|                                                  | Name: | Michelle      Lair |
|                                                  | Title: | VP      & Treasurer |

| By:    | SKYLINER      LLC                                                                                                                                                                                                                                                                                                                  |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Its:   | General      Partner                                                                                                                                                                                                                                                                                                               |
|   |                                                                                                                                                                                                                                                                                                                               |   |
| By:    | /s/ Michelle      Lair                                                   |
|   | Name:                                                                                                                                                                                                                                                                                                                              | Michelle      Lair |
|   | Title:                                                                                                                                                                                                                                                                                                                             | VP      & Treasurer |

| BANK      OF AMERICA N.A.                 |
|-------------------------------------------|
|   as Agent and      as a Lender |
|  By:                                 |  /s/      Robert T.      Lund                                                   |
|                                      | Name: | Robert      T. Lund |
|                                      | Title: | Senior      Vice President |

| CREDIT      SUISSE, CAYMAN ISLANDS BRANCH |
|-------------------------------------------|
|  By:                                 |  /s/ Alain      Daoust                                                   |
|                                      | Name: | Alain      Daoust |
|                                      | Title: | Director |
|  By:                                 |  /s/      Denise L. Alvarez |
|                                      | Name: | Denise      L. Alvarez |
|                                      | Title: | Associate |

| CITIBANK,      N.A.                       |
|-------------------------------------------|
|   as Agent and      as a Lender |
|  By:                                 |  /s/ Raymond G.      Dunning                                                       |
|                                      | Name: | Raymond      G. Dunning |
|                                      | Title: | Vice      President |

| JPMORGAN      CHASE BANK, N.A. |
|--------------------------------|
|  By:                      |  /s/ Mark      Cuccinello                                                   |
|                           | Name: | Mark      Cuccinello |
|                           | Title: | Vice      President |

| WACHOVIA      CAPITAL FINANCE CORPORATION (WESTERN) |
|-----------------------------------------------------|
|   as Agent and      as a Lender           |
|  By:                                           |  /s/ D.B.      Laughton                                                   |
|                                                | Name: | D.B.      Laughton |
|                                                | Title: | Managing      Director |
|   By:                                     |   /s/ D.B.      Laughton                                                   |
|                                                | Name: | D.B.      Laughton |
|                                                | Title: | Managing      Director |