EXHIBIT 10.15 PURCHASE AND SALE AGREEMENT THIS PURCHASE AND SALE AGREEMENT (hereinafter this "Agreement") is made and entered into as of November 3, 2000, by and between ANTELOPE ENERGY COMPANY, LLC, COYOTE EXPLORATION COMPANY and MELANGE ASSOCIATES,...Purchase and Sale Agreement • June 26th, 2001 • Infinity Inc • Oil & gas field services, nec • Colorado
