John P. DesBarres* has served as an independent director of our general partner since May 19, 2005. He was formerly Chairman of the Board (“Chairman”), President and Chief Executive Officer (“CEO”) of Transco Energy Company (“Transco”) until his retirement in 1995. Prior to joining Transco in 1991, he was Chairman, President and CEO for Santa Fe Pacific Pipelines, Inc. Mr. DesBarres also currently serves as a board member for American Electric Power Company, Inc. and for the general partner of Penn Virginia Resource Partners, L.P.

Patrick C. Eilers has served as a director of our general partner since June 17, 2003. He also serves as a director of the general partner of Magellan Midstream Holdings, L.P. (“MGG GP”) and MGG Midstream Holdings, L.P. (“MGG Holdings GP”). Mr. Eilers is a Managing Director of Madison Dearborn Partners, LLC overseeing the firm’s energy, power and chemicals practice. Prior to joining Madison Dearborn Partners in 1999, he served as a Director with Jordan Industries, Inc. and as an Associate with IAI Venture Capital, Inc. He also played professional football with the Chicago Bears, the Washington Redskins and the Minnesota Vikings from 1990 to 1995.

Thomas T. Macejko, Jr. has served as a director of our general partner since January 29, 2007. He also serves as a director of MGG GP. Since 2004, Mr. Macejko has served as a Vice President of Madison Dearborn Partners, LLC. Prior to joining Madison Dearborn Partners, LLC, Mr. Macejko attended Northwestern University J.L. Kellogg Graduate School of Management. From 1998 through 2002, he was an analyst with Madison Dearborn Partners, LLC and Deutsche Banc Alex. Brown.

James R. Montague* has served as an independent director of our general partner since November 21, 2003. He has been retired since 2003. From 2001 to 2002, Mr. Montague served as President of EnCana Gulf of Mexico, Inc., an oil and gas exploration and production business. From 1996 to 2001, he served as President of two subsidiaries of International Paper Company (“International Paper”), IP Petroleum Company, an oil and gas exploration and production company, and GCO Minerals Company, a company that manages International Paper’s mineral holdings. Mr. Montague serves as a director of Atwood Oceanics, Inc. and the general partner of Penn Virginia Resource Partners, L.P.

George A. O’Brien, Jr.* has served as an independent director of our general partner since December 12, 2003. Mr. O’Brien is currently the President and CEO of Pacific Lumber Company. From 1988 until 2005, he worked for International Paper where he served as Senior Vice President of Forest Products responsible for its forestry, wood products, minerals and specialty chemicals businesses. Other responsibilities during his tenure at International Paper included corporate development, CFO of its New Zealand subsidiary and operations management.

Thomas S. Souleles has served as a director of our general partner since December 13, 2004. He also serves as a director of MGG GP and MGG Holdings GP. Mr. Souleles has been employed by Madison Dearborn Partners, LLC since 1995 where he serves as a Managing Director, jointly leading the firm’s basic industries practice. He is also a director of Great Lakes Dredge & Dock Corporation and Packaging Corporation of America.

Don R. Wellendorf is currently our Chairman and has served as a director, President and CEO of our general partner since November 15, 2002. He is also Chairman, President and CEO of MGG GP and President and CEO of MGG Holdings GP. Prior to November 2002, Mr. Wellendorf served as Senior Vice President, Treasurer and Chief Financial Officer of our former general partner. From 1998 to 2002, he served as a Vice President of a subsidiary of The Williams Companies, Inc. (“Williams”). Prior to Williams’ merger with MAPCO Inc. (“MAPCO”), he served in various management positions since joining MAPCO in 1979.

*Independent Director who meets the independence and expertise requirements of the NYSE and the SEC