Search U.S. government technical reports digitized or harvested by TRAIL.
Analyses of Samples of Delivered Coal: Collected from July 1, 1915 to January 1, 1922, with a Chapter on the Tidewater Pool Classifications
Analyses of Alabama coals
Analyses of Utah coals
Analyses of Tennessee coals
Analyses of Missouri coals
Analyses of Indiana coals
Analyses of Oklahoma coals
Analyses of Arkansas coals
Analyses of Kansas coals / [by the U.S. Bureau of Mines].
Analyses of Wyoming coals
Analyses of Montana coals
Analyses of Illinois coals.
Analyses of Pennsylvania bituminous coals :supplement to Technical Paper 590
Analyses of Virginia coals.
Analyses of Tennessee coals (including Georgia).
Handbook on coal sampling