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Black Stone Minerals Company, a privately-owned Delaware limited partnership located in Houston, Texas, and is one of the largest fee mineral and royalty owners in the United States. Along with its private equity funds, Black Stone s ownership includes in excess of 15,000 wells and approximately 13.2 million gross acres located in more than 35 states. Since 1999, the company has closed nine large acquisitions of mineral properties with producing royalty totaling approximately $380 million, from large corporations to family-held entities.