Exhibit 99.2
JOINT FILING AGREEMENT
The parties hereto agree that pursuant to Rule 13d-1(k) of Regulation
13D-G promulgated by the Securities and Exchange Commission pursuant to the
Securities Exchange Act of 1934, as amended, the Schedule 13G of which this
Agreement is made an exhibit is filed on behalf of them in the capacity set
forth below. The parties hereto agree that, once this Schedule 13G is fully
executed by all parties, Xxxxxx Xxxxxxxxx shall be authorized to file this
Schedule 13G on behalf of all such parties and shall be designated as the person
authorized to receive notices and communications with respect to the Schedule
13G and any amendments thereto.
Date: September 25, 2002 Yorktown Energy Partners III, L.P.
By its General Partner,
Yorktown III Company LLC
By: /s/ Xxxxx X. Xxxxxx
Name: Xxxxx X. Xxxxxx
Title: Member
Date: September 25, 2002 Yorktown Energy Partners IV, L.P.
By its General Partner
Yorktown IV Company LLC
By: /s/ Xxxxx X. Xxxxxx
Name: Xxxxx X. Xxxxxx
Title: Member
Date: September 25, 2002 Yorktown Partners LLC
By: /s/ Xxxxx X. Xxxxxx
Name: Xxxxx X. Xxxxxx
Title: Member