EXHIBIT 2.1 EXCHANGE AGREEMENT THIS AGREEMENT ("Agreement") is entered into this 15th day of July, 2003 between KERR-McGEE ROCKY MOUNTAIN CORPORATION, a Delaware corporation ("KMG"), with offices at 1999 Broadway, Suite 3600, Denver, Colorado 80202,...Exchange Agreement • July 24th, 2003 • United States Exploration Inc • Wholesale-petroleum & petroleum products (no bulk stations) • Colorado
