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Federal
Powder River Basin boundary, 1999 Coal Resource Assessment (prbbndg.shp)
Department of the Interior —
This ArcView shapefile contains a polygon representing the boundary of the Powder River Basin based on a generalized contact of Cretaceous and Tertiary rocks. This... -
Federal
Wyodak-Anderson mine and lease areas in the Powder River Basin, Wyoming and Montana (prbleasg.shp)
Department of the Interior —
This ArcView shapefile contains a representation of the mine and lease boundaries in the Powder River Basin. This theme was created specifically for the National Coal...