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Introduction by M R Campbell
The Sentinel Butte lignite field North Dakota and Montana by A G Leonard
The Miles City coal field Montana by A J Collier and C D Smith
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anticline base bed in sec beds of coal bench Bighorn Basin bituminous bony Bridger British thermal units brown Bull Mountain carbonaceous Clay Coal 1 Shale coal beds coal field coal group coal-bearing rocks Colorado contains County Cretaceous Dakota Dietz Divide Basin drab east escarpment exposed exposure fault feet thick folio following section Geologic Atlas U. S. gray inches thick Laramie formation lignite Limestone locality located lower Mancos Mesa Mesaverde formation Miles City mines moisture Montana northeast opened outcrop places prospect Red Lodge region Rept ridges Rock Springs samples sandstone sandy Section of coal Sentinel Butte Shale 1 Coal shaly side slope southern southwest strata stratigraphic subbituminous surface Survey syncline Tertiary thin beds Tongue River Total coal U. S. Geol unconformity Union Pacific Railroad upper Utah valley vicinity Volatile matter Wasatch workable thickness Wyoming Yampa