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Mr. Cropper was elected to the Board of Directors in May 2002. Mr. Cropper is currently a private investor. From January 1996 until the time of his retirement in December 1998, he served as President and Chief Executive Officer of Williams Energy Services, a diversified energy company. Mr. Cropper served as President of Williams Pipe Line Company from 1986 to 1998. He is a director of: Energy Transfer Partners LP, QuikTrip Corporation, Berry Petroleum, Rental Car Finance Corporation, and NRG Energy, Inc. Mr. Cropper has also been a past Chairman of the Association of Oil Pipelines, and has served on the National Petroleum Council as well as the Transportation and Public Policy Committees of the American Petroleum Institute. | 