John R. Butler, Jr. was appointed to be a member of the Board of Directors of our general partner in August 2006, effective upon the consummation of our initial public offering, and has been the Chairman of the Board of Directors since April 2010. Mr. Butler has been Chairman of J.R. Butler and Company since 1976. Mr. Butler is currently a director of Anadarko Petroleum Corporation, a position he has held since 1996. In addition, Mr. Butler was Chairman and Chief Executive Officer of GeoQuest International Holdings, Inc., Senior Chairman of Petroleum Information Corp. and Vice Chairman of Petroleum Information/Dwights, L.L.C. until 1997. He was also Chairman of the Society of Exploration Geophysicists Foundation until December 2001. Mr. Butler has a B.S. in Chemical Engineering from Stanford University.

Walker C. Friedman was appointed to be a member of the Board of Directors of our general partner in April 2010. Mr. Friedman is a partner at Friedman, Suder & Cooke, P.C., a law firm specializing in business litigation. He is currently a member of the Litigation Section of the State Bar of Texas, the Eldon B. Mahon Inn of Court, the Tarrant County and American Bar Associates, and the State Bar of Texas. Mr. Friedman has been named for several years as a "Texas Super Lawyer" by Texas Monthly Magazine and is a former president of the Tarrant County Civil Trial Lawyers Association. He was the Chairman of the Fort Worth Mobility and Air Quality Advisory Committee from 2005 to 2008 and the Chairman and Executive Committee member for the Fort Worth Transportation Authority from 1993 to 1999. Mr. Friedman also serves as a trustee to the Mary Potishman Lard Trust and the Amon Carter Museum. Mr. Friedman received his J.D. from Southern Methodist University in 1977, after receiving his B.A. from University of Texas at Austin.

Mr. Kilpatrick was appointed to be a member of the Board of Directors of our general partner in March 2008. Mr. Kilpatrick is President of Kilpatrick Energy Group, which invests in oil and gas ventures and provides executive management consulting services. He has 30 years of executive, management and operating experience in the oil and gas industry, including extensive experience in technical and economic evaluations of new projects, acquisitions, and investment proposals. He currently serves on the Board of Directors, and is Chairman of the Audit Committee, of Cheniere Energy. Until 2007, David also served on the Boards of Whittier Energy Corporation and PYR Energy Corporation. He was formerly President and Chief Operating Officer of Monterey Resources, Inc., the largest independent oil company in California until its merger with Texaco. He graduated from the University of Southern California with a B.S. degree in Petroleum Engineering and from Whittier College with a Bachelor's degree in Geology and Physics. He has also held leadership positions with many community and professional organizations.

Gregory J. Moroney was appointed to be a member of the Board of Directors of our general partner in August 2006, effective upon the consummation of our initial public offering. Mr. Moroney is a director of BreitBurn Energy, a position he has held since June 2004. Currently, Mr. Moroney is the Managing Member and Owner of Energy Capital Advisors, LLC, a position he has held since January 2003. Mr. Moroney is also a Senior Financial Consultant for Ammonite Resources LLC, a position he has held since June 2005. Mr. Moroney served as Managing Director for Deutsche Bank Securities Inc. from 1993 to December 2002. Prior to this, Mr. Moroney was with Citicorp/Citibank from 1977 to 1993 in Calgary, Toronto and New York. Mr. Moroney has a B.A. from Yale University.

W. Yandell Rogers, III, was appointed to be a member of the Board of Directors of our general partner in April 2010. Since 2008, Mr. Rogers has served as Chief Executive Officer of Lewiston Atlas Ltd., a privately-owned holding company with investments in service, manufacturing and oil and gas interests. From 2002 to 2008, Mr. Rogers served as Chief Executive Officer of Priest River Ltd., a privately-owned holding company with investments in service, manufacturing and oil and gas interests. He served as Chief Executive Officer of Ridgway's, Inc., the largest privately owned provider of reprographics to the engineering and construction industries in the United States, from 1997 to 2002. Mr. Rogers currently serves on the Board of Directors of Quicksilver Resources Inc., where he has been a Board member since March 1999. Mr. Rogers received his B.B.A from Southern Methodist University in 1986.

Charles S. Weiss was appointed to be a member of the Board of Directors of our general partner in August 2006, effective upon the pricing of our initial public offering. Mr. Weiss is a Founder and Managing Partner of JOG Capital Inc., a position that he has held since July 2002. In addition, Mr. Weiss served as Managing Director and Head of Royal Bank of Canada's Capital Markets Energy Group, a position he held from October 2002 through May 2006. From June 2001 to July 2002, Mr. Weiss pursued various investment opportunities, which included the establishment of JOG Capital Inc. Previously, Mr. Weiss was the Managing Director and Head of the Energy and Power Group with Bank of America Securities from 1998 to June 2001. Mr. Weiss obtained a B.A in Physics from Vanderbilt University and an M.B.A. from the University of Chicago School of Business.