Title: Maps showing coal-split boundaries, isopachs of coal splits, coal resources, and coal quality--Mammoth Coal Bed, Paleocene Tongue River member of the Fort Union Formation, Bull Mountain Coal Field, south-central Montana /
Authors: Connor, Carol Waite.; Geological Survey (U.S.)
Publisher: The Survey ; For sale by Map Distribution,
Year: 1989
Subjects: Coal Geology Montana Musselshell County Maps.; Coal Geology Montana Yellowstone County Maps.; Fort Union Formation Maps.; Musselshell County (Mont.) Maps.; Yellowstone County (Mont.) Maps.