| H. Craig Clark
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| President, Chief Executive Officer, Director
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Age: 52
Bio & Compensation - Reuters
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| David H. Keyte
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| Chief Financial Officer, Executive Vice President
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Age: 52
Bio & Compensation - Reuters
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| J. C. Ridens
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| Chief Operating Officer, Executive Vice President
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Age: 53
Bio & Compensation - Reuters
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| Cyrus D. Marter IV
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| Senior Vice President, General Counsel, Secretary
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Age: 45
Bio & Compensation - Reuters
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| Cecil N. Colwell
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| Senior Vice President - Worldwide Drilling
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Age: 58
Bio & Compensation - Reuters
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| Leonard C. Gurule
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| Senior Vice President
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Age: 52
Bio & Compensation - Reuters
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| Glen J. Mizenko
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| Senior Vice President - Business Development and Engineering
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Age: 46
Bio & Compensation - Reuters
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| Stephen T. Harpham
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| Vice President, Western Region
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Age: 47
Bio & Compensation - Reuters
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| Mark E. Bush
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| Vice President, Eastern Region
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Age: 49
Bio & Compensation - Reuters
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| Ronald C. Nutt
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| Vice President - Southern Region
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Age: 51
Bio & Compensation - Reuters
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