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Federal
Knobloch coal resource unit - main coal bed split, 1999 National Coal Resource Assessment (knsplitg.shp)
Department of the Interior —
This ArcView shapefile contains a polygon representation of the Knobloch coal resource unit - main coal bed split. This theme was created specifically for the... -
Federal
Coal overburden thickness of Knobloch coal zone from 1999 National Coal Resource Assessment (knovbg.shp)
Department of the Interior —
This ArcView shapefile is a polygon representation of the overburden thickness above the Knobloch coal resource unit in the Powder River Basin. This theme was created... -
Federal
Net coal thickness map for the Knobloch coal resource unit, Ashland coalfield, Montana (kncatg.shp)
Department of the Interior —
This ArcView shapefile contains a polygon representation of the net coal thickness of the Knobloch coal resource unit, Ashland coalfield, Montana. This theme was... -
Federal
Ashland coalfield boundary; assessment area for the Knobloch coal resource unit (knbndg.shp)
Department of the Interior —
This ArcView shapefile contains a polygon representation of the Ashland coalfield, Montana, as defined in the USGS National Coal Resource Assessment (NCRA) project....