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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 | Metadata Last Checked: January 27, 2026 | Last Modified: 2021-06-15T00:00:00Z
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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