Decker overburden and exposed zone for the Anderson-Canyon coal zone, 1999 National Coal Resource Assessment
These ArcView shapefiles contain:  1) a representation of
thickness of overburden above the Anderson-Canyon coal
zone, and 2) a representation of exposed zone for the Anderson-Canyon coal
zone in the Decker coalfield, Powder River Basin,
Montana.  These themes were created specifically for the
National Coal Resources …