Dorchester Minerals LP

William Casey McManemin, age 48, has served as Chief Executive Officer and as a manager of Dorchester Minerals Management GP LLC and as Chief Executive Officer of Dorchester Minerals Operating GP LLC and Dorchester Minerals, L.P. since 2001. He received his Bachelor of Science degree in Petroleum Engineering from Texas A&M University in 1984.

H.C. Allen, Jr., age 70, has served as Chief Financial Officer and as a manager of Dorchester Minerals Management GP LLC and as Chief Financial Officer of Dorchester Minerals Operating GP LLC and Dorchester Minerals, L.P. since 2001. He co-founded SASI Minerals Company, Republic Royalty Company, Spinnaker Royalty Company, L.P. and CERES Resource Partners, LP with Mr. McManemin in 1988, 1993, 1996 and 1998, respectively. He received his Bachelor of Business Administration degree from the University of Texas in 1962 and his Master of Business Administration degree from the University of North Texas in 1963.

James E. Raley, age 69, has served as Chief Operating Officer and as a manager of Dorchester Minerals Management GP LLC and as Chief Operating Officer of Dorchester Minerals Operating GP LLC and Dorchester Minerals, L.P. since 2001. He had served as a general partner of Dorchester Hugoton since 1990. He received a Bachelor of Science degree in Mechanical Engineering from Texas Tech University in 1962.

Buford P. Berry, age 73, has served as a manager and an Advisory Committee Member of Dorchester Minerals Management GP LLC since February 2003. He is currently of counsel to Thompson & Knight LLP, a Texas based law firm. Mr. Berry has been an attorney with Thompson & Knight LLP, serving in various capacities since 1963, including as Managing Partner from 1986 to 1998. He also currently serves on the Board of Directors of Holly Corporation. Mr. Berry previously served as a Vice Chairman of the Advisory Board of the Institute for Energy Law of the Center for American and International Law (formerly Southwestern Legal Foundation). He is a past Chairman of the Natural Resources Committee of the Taxation Section of the American Bar Association and past Chairman of the Southwestern Legal Foundation Oil and Gas Tax Institute. From 1958 to 1960, Mr. Berry served as a Lieutenant in the United States Naval Reserve. He received his Bachelor of Business Administration degree in 1958 and his Bachelor of Laws Degree in 1963, both from the University of Texas.

C. W. “Bill” Russell, age 67, has served as a manager and an Advisory Committee Member of Dorchester Minerals Management GP LLC since May 2004. Mr. Russell was employed by KPMG, LLP and predecessor firms from 1967 until his retirement in 1995. Elected as a partner in 1974, Mr. Russell concentrated in the field of energy taxation and served in various capacities at KPMG including as National Director, technical tax services – energy and chairman of the KPMG International Petroleum Group. He co-authored Income Taxation of Natural Resources, from 1986 to 2000. He currently performs tax services and related accounting functions for independent oil and gas producers and individuals. Mr. Russell is a graduate of the University of Texas at Arlington and is a certified public accountant.

Preston A. Peak, age 86, has served as a manager of Dorchester Minerals Management GP LLC since 2001. Mr. Peak co-founded Dorchester Hugoton and was a general partner since 1982. He holds a Bachelor of Science degree from the U.S. Naval Academy and a Master of Business Administration degree from the Wharton School of the University of Pennsylvania. From 1954 until 1984, he served Dorchester Gas Corporation in various financial capacities, including Vice Chairman. Mr. Peak previously served on the boards of directors of each of Kaneb Services, Inc. and Kaneb Pipe Line Partners, L.P.

Robert C. Vaughn, age 53, has served as a manager of Dorchester Minerals Management GP LLC since 2001. Mr. Vaughn has served in various capacities with Vaughn Petroleum, LLC and affiliated entities since 1979, including as Chairman, President and Chief Executive Officer. He co-founded Republic Royalty Company in 1993 and Dorchester Minerals, L.P. in 2003. He received his Bachelor of Business Administration from the University of Texas at Austin. He currently serves on the Board of Trustees of the Culver Educational Foundation, the Development Board of The University of Texas at Austin and the Board of Visitors of the McDonald Observatory and Department of Astronomy of the University of Texas at Austin.

Ronald P. Trout, age 69, currently serves on the Board of Directors and Audit Committee of The Cushing MLP Total Return Fund, a New York Stock Exchange listed closed-end investment company. Mr. Trout previously served as an Advisor and Audit Committee member of Dorchester Hugoton, Ltd., one of our predecessors, from 2001 through 2003. He was a Senior Vice President and one of the founding partners of Hourglass Capital Management Corp., a Texas-based investment management company until his retirement in April 2001. Prior to the formation of Hourglass, he was a Senior Vice President of Mercantile Securities Corp., the trust investment arm of Mercantile Bank. Mr. Trout has been a Chartered Financial Analyst since 1974 and is a current member of the Dallas Association of Investment Analysts and past President of the Oklahoma Chapter of the Analysts Society. Mr. Trout received a B.S. and M.S. in Business Administration with a major in Finance from the University of Missouri.