| Frank M. Semple
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| Chairman of the Board, President, Chief Executive Officer of MarkWest Energy GP, L.L.C
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Age: 60
Bio & Compensation
- Reuters
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| Nancy K. Buese
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| Chief Financial Officer, Senior Vice President of MarkWest Energy GP, L.L.C
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Age: 43
Bio & Compensation
- Reuters
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| John C. Mollenkopf
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| Chief Operations Officer, Senior Vice President of MarkWest Energy GP, L.L.C
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Age: 50
Bio & Compensation
- Reuters
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| C. Corwin Bromley
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| Senior Vice President, General Counsel, Secretary of MarkWest Energy GP, L.L.C
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Age: 54
Bio & Compensation
- Reuters
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| Randy S. Nickerson
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| Senior Vice President, Chief Commercial Officer of MarkWest Energy GP, L.L.C
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Age: 50
Bio & Compensation
- Reuters
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| Donald D. Wolf
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| Lead Independent Director of MarkWest Energy GP, L.L.C
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Age: 69
Bio & Compensation
- Reuters
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| Keith E. Bailey
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| Independent Director of MarkWest Energy GP, L.L.C
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Age: 58
Bio & Compensation
- Reuters
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| Michael L. Beatty
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| Independent Director of MarkWest Energy GP, L.L.C
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Age: 65
Bio & Compensation
- Reuters
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| Charles K. Dempster
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| Independent Director of MarkWest Energy GP, L.L.C
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Age: 69
Bio & Compensation
- Reuters
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| Anne E. Fox Mounsey
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| Independent Director of MarkWest Energy GP, L.L.C
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Age: 45
Bio & Compensation
- Reuters
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