Net coal thickness isopachs, Ferris 23, 25, 31, 50 and 65 coal zones, Hanna Basin Wyoming (fer*catg)
These ArcView shapefiles contain representations of the net coal thickness in the Ferris 23, 25, 31, 50 and 65 coal zones in the Ferris coalfield, Hanna Basin, Wyoming. These datasets were created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region.