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This illustrated U.S. Geological Survey report examines where coal occurs beneath federal lands and distinguishes the different measures used to describe it. A plain-language summary introduces the subject before the technical discussion explains coal ranks, resources, reserves and the mines that operate on federal lands.
Maps and tables connect the geological distribution of coal with land status and the information available for assessing supplies. Separate sections consider reserves and broader resources, including the large coal resources of Alaska. The authors explain the terminology and assessment context rather than treating all coal in the ground as equally available for extraction. This complete 2026 publication retains its mining photographs, maps, data tables and references. The supplied native PDF is the publisher’s August 2026 version 1.1 of a report first released in July 2026.
Brian N. Shaffer; Michelle N. Johnston; Scott A. Kinney. Coal Beneath Federal Lands in the United States—Mines, Reserves, and Resources. U.S. Geological Survey, 2026. https://doi.org/10.3133/cir1570. Public domain U.S. Government publication. Original agency, author and photograph credits retained.