Glencore International AG – Underwriting Agreements Watch

from SC 13D/A ~5 pages Joint Filing Agreement

from SC 13D/A ~1 page Joint Filing Agreement

from SC 13D/A 1 page Exhibit 1 Joint Filing Agreement Each of the Undersigned Hereby Agrees to the Joint Filing on Behalf of Each of Them of This Amendment No. 1 to the Statement on Schedule 13d (Including Any Amendments Thereto) With Respect to the Common Stock, Par Value $0.01 Per Share, of Century Aluminum Company. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Hereby Execute This Agreement, This 21st Day of May, 2004. Glencore AG By: /S/ Eberhard Knoechel Name: Eberhard Knoechel Title: Director By: /S/ Andrew Bentley Name: Andrew Bentley Title: Officer Glencore International AG By: /S/ Zbynek E. Zak Name: Zbynek E. Zak Title: Director By: /S/ Ivan Glasenberg Name: Ivan Glasenberg Title: Director Glencore Holding AG By: /S/ Willy R. Strothotte Name: Willy R. Strothotte Title: Director By: /S/ Ivan Glasenberg Name: Ivan Glasenberg Title: Director

from SC 13D 1 page Schedule 13d - Cusip No. 598709103 Page 19 of 20 - Exhibit 1 Joint Filing Agreement Pursuant to Rule 13d-1(k) the Undersigned Persons (The "Reporting Persons") Hereby Agree That a Joint Statement on This Schedule 13d, and Any Amendments Thereto, Is to Be Filed. Each of the Reporting Persons Is Responsible for the Completeness and Accuracy of the Information Concerning Each of Them Contained Therein, but None of the Reporting Persons Is Responsible for the Completeness or Accuracy of the Information Concerning Any Other Reporting Person. Date: March 22, 2004. Glencore Finance AG By: /S/ Steven N. Isaacs Name: Steven N. Isaacs Title: Director By: /S/ Barbara A. Wolfensberger Name: Barbara A. Wolfensberger Title: Director Glencore International AG By: /S/ Zbynek E. Zak Name: Zbynek E. Zak Title: Director By: /S/ Lotti Grenacher Hagmann Name: Lotti Grenacher Hagmann Title: Officer <page> Schedule 13d - Cusip No. 598709103 Page 20 of 20 - Glencore Holding AG By: /S/ Willy R. Strothotte Name: Willy R. Strothotte Title: Chairman By: /S/ Ivan Glasenberg Name: Ivan Glasenberg Title: Director Mizuho International PLC By: /S/ Sabah Zubaida Name: Sabah Zubaida Title: Managing Director Mizuho Securities Co., Ltd. By: /S/ Nobuo Oya Name: Nobuo Oya Title: Managing Director

from SC 13D ~5 pages Joint Filing Agreement