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Mark A. Jackson has served as Chief Executive Officer of the Company since October 30, 2006, as President of the Company since February 2006 and as Chief Operating Officer of the Company since March 2005. Mr. Jackson served as Senior Vice President of the Company from September 2000 to February 2006. Mr. Jackson served as Chief Financial Officer, Treasurer and Controller of the Company from September 2000 to September 2005. In addition, Mr. Jackson served as the Company’s acting Chief Financial Officer from March through November 2006. From 1999 to August 2000, Mr. Jackson served as Executive Vice President and Chief Financial Officer for Santa Fe Snyder Corporation, an oil and gas exploration and production company. From 1997 to 1999, he served as Senior Vice President and Chief Financial Officer of Snyder Oil Corporation, an oil and gas exploration and production company. Prior to 1997, Mr. Jackson served consecutively in the positions of Vice President & Controller, Vice President Finance and Vice President & Chief Financial Officer of Apache Corporation, an oil and gas exploration and production company, beginning in 1988. | 