Black Stone Minerals Company Names New President, COO.

HOUSTON -- Black Stone Minerals Company, L.P., one of the largest privately held royalty and fee mineral owners in the country, has announced the promotion of Hallie A. Vanderhider, to President and Chief Operating Officer. The promotion was effective October 1, 2007. Previously, she served as Executive Vice President and Chief Financial Officer.

Ms. Vanderhider succeeds Mr. Thomas L. Carter, Jr. who remains as Chief Executive Officer and Chairman of the Board. "I am delighted to announce Hallie's promotion," said Mr. Carter. "On behalf of the Board, I want to thank her for her outstanding commitment to the growth of this company. I know that we will continue to benefit from her perspective and dedication in the years to come."

As President and COO, Ms. Vanderhider is responsible for all aspects of the business, including the finance and accounting functions, business development, information technology, human resources, risk management, investor relations and operations. Before joining Black Stone in 2003, Ms. Vanderhider held the position of Chief Financial Officer for EnCap Investments L.P., a leading private equity manager serving the oil and gas industry. Prior to her assignment with EnCap, she served in a variety of positions at publicly traded Damson Oil Corporation, including Chief Accounting Officer.

Black Stone Minerals Company, L.P., a privately-owned Delaware limited partnership located in Houston, Texas, owns and controls, either directly or through its institutionally supported partnerships, interests in more than 17,000 wells and approximately 16 million gross acres located in 41 states. With approximately 38.8 MMBOE of proved producing oil and gas reserves and an extensive inventory of prospective, undeveloped mineral acres, the company and its affiliates are projected to generate EBITDA of approximately $306.7 million for the year ended December 31, 2007.