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Hanna 77, 78, 79 and 81 coal zone study limit boundaries, Wyoming (ha*stdyg)

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: May 05, 2026 at 10:20 PM | Dataset Last Updated: June 15, 2021 at 12:00 AM
These ArcView shapefiles contain representations of the Hanna coal zone study limit boundaries in the Hanna coalfield, Hanna Basin, Wyoming. These shapefiles were created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region.

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