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J. Mark Lester

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Overview

J. Mark Lester, 55, has been Executive Vice President"Exploration since April 2006. He served as Senior Vice President"Exploration from 1995 to March 2006 and served as Vice President"Exploration from 1989 to 1995. From 1986 to 1989, Mr. Lester was self-employed and acted as a consultant to Messrs. McClendon and Tom L. Ward. He was employed by various independent oil companies in Oklahoma City from 1980 to 1986, and was employed by Union Oil Company of California from 1977 to 1980 as a geophysicist. Mr. Lester graduated from Purdue University in 1975 and 1977.


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