Search U.S. government technical reports digitized or harvested by TRAIL.
Friability, grindability, chemical analyses, and high- and low-temperature carbonization assays of Alabama coals
Carbonizing properties and petrographic composition of Upper Freeport coal from Morgantown District, Monongalia County, W. Va. :and of Lower Freeport coal from eastern Indiana County, near Cambria County, Pa.
Low-temperature carbonization of Alaskan coals