Standard Contracts
1 EXHIBIT 99.1 JOINT FILING AGREEMENT The parties hereto agree that pursuant to Rule 13d-1(k)(1)(iii) of Regulation 13D promulgated by the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, the Schedule 13D...Joint Filing Agreement • August 23rd, 1999 • Natural Gas Partners Iii Lp
AGREEMENT MADE PURSUANT TO RULE 13d-1(f)(1)(iii) 2 JOINT FILING AGREEMENTJoint Filing Agreement • November 5th, 1997 • Natural Gas Partners Iii Lp
JOINT FILING AGREEMENTJoint Filing Agreement • November 6th, 1998 • Natural Gas Partners Iii Lp
1 EXHIBIT 10.1Lock-Up Agreement • November 5th, 1997 • Natural Gas Partners Iii Lp
EXHIBIT D AGREEMENT MADE PURSUANT TO RULE 13d-1(f)(1)(iii) JOINT FILING AGREEMENT This Joint Filing Agreement (this "Agreement") is made and entered into as of the 17th day of February, 2000, by and among the undersigned parties. In accordance with...Joint Filing Agreement • February 17th, 2000 • Natural Gas Partners Iii Lp
