Black Stone Minerals, L.P. is a mining company, which is engaged in acquisitions of mineral and royalty properties. The Company owns oil and natural gas mineral interests of approximately 14.5 million acres in the United States. It also owns nonparticipating interests in 1.2 million acres and overriding interests in 1.4 million acres. These non-cost-bearing interests (mineral and royalty interests) include ownership in approximately 40,000 producing wells. It has interests in various active resource plays, including the Bakken/Three Forks plays, Eagle Ford Shale, Wolfcamp play, Haynesville/Bossier plays, Granite Wash play and Fayetteville Shale, as well as emerging plays, such as the Tuscaloosa Marine Shale and the Canyon Lime play. Its properties include Louisiana-Mississippi Salt Basins, Western Gulf (onshore), Williston Basin, Palo Duro Basin, Permian Basin, Anadarko Basin, Appalachian Basin, East Texas Basin, Arkoma Basin, Bend Arch-Fort Worth Basin and Southwestern Wyoming.