EXHIBIT A JOINT FILING AGREEMENT Each of the undersigned hereby affirms that it is individually eligible to use Schedule 13D, and agrees that this Schedule 13D is filed on its behalf. Dated this 3rd day of March, 1998. TRINITY PETROLEUM MANAGEMENT,...

                                        EXHIBIT A


                                 JOINT FILING AGREEMENT


      Each of the undersigned hereby affirms that it is individually eligible to
use Schedule 13D, and agrees that this Schedule 13D is filed on its behalf.

      Dated this 3rd day of March, 1998.


TRINITY PETROLEUM MANAGEMENT, LLC


By: /S/J. XXXXXX XXXXXX
   --------------------------------------------
   Name: J. Xxxxxx Xxxxxx
   Title: Manager




/S/J. XXXXXX XXXXXX
-----------------------------------------------
   Name: J. Xxxxxx Xxxxxx, Individually
   Position: Director