EX-99.1 3 ex1.txt EXHIBIT 1 EXHIBIT 1 AGREEMENT Pursuant to Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned agree that the Schedule 13D to which this Agreement is attached as Exhibit 1 is filed on behalf of each of us. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same agreement. June 17, 2002 OCCIDENTAL PETROLEUM CORPORATION By: /s/ STEPHEN I. CHAZEN ------------------------------------------------- Name: Stephen I. Chazen Title: Chief Financial Officer and Executive Vice President - Corporate Development OCCIDENTAL C.O.B. PARTNERS by OXY USA Inc., its managing partner By: /s/ STEPHEN I. CHAZEN ------------------------------------------------- Name: Stephen I. Chazen Title: Executive Vice President PLACID OIL COMPANY By: /s/ STEPHEN I. CHAZEN ------------------------------------------------- Name: Stephen I. Chazen Title: Executive Vice President OXY USA INC. By: /s/ STEPHEN I. CHAZEN ------------------------------------------------- Name: Stephen I. Chazen Title: Executive Vice President Page 19 of 20 Pages OCCIDENTAL OIL AND GAS HOLDING CORPORATION By: /s/ STEPHEN I. CHAZEN ------------------------------------------------- Name: Stephen I. Chazen Title: Executive Vice President OCCIDENTAL PETROLEUM INVESTMENT CO. By: /s/ J. R. HAVERT ------------------------------------------------- Name: J. R. Havert Title: Vice President and Treasurer Page 20 of 20 Pages