Mine and lease boundaries in the Green River Basin, Wyoming, 1999 National Coal Resource Assessment (grbleasg.shp)
This ArcView shapefile contains a polygon
representation of  mine &amp; lease boundaries in the Point of
Rocks-Black Butte coalfield in the Greater Green River
Basin, Wyoming. The boundaries are a part of the National
Coal Resource Assessment of the Northern Rocky
Mountain and Great Plains Fort Union Coal Resources …