1 EXHIBIT 6.13 PURCHASE AND SELL AGREEMENT DATE: MAY 4,2000 SUBJECT: CASTILLO #1 AND #2 WELLS AND LEASE(S) H & TC RR CO. SURVEY NO.75 AND SALVADOR CASTILLO SURVEY, A-282 JASPER COUNTY, TEXAS PARTIES: MCGOWEN RESOURCES COMPANY, INC. (MCGOWEN), SELLER...Purchase and Sell Agreement • March 26th, 2001 • Trek Resources Inc
