Search U.S. government technical reports digitized or harvested by TRAIL.
Use of pulverized rock as dense medium for salvaging coal from Pittsburgh-bed refuse
Dense-medium pilot-plant performance tests on coal
Preparation characteristics of coal from Greene County, Pa.
Preparation characteristics of coal from Allegheny County, Pa.
Preparation characteristics of coal from Washington County, Pa.
Using radiant heat to reduce filter-cake moisture in coal preparation
Preparation characteristics of coal from Marion County, W. Va.
Preparation characteristics of coal from Butler County, Pa.
Preparation characteristics of coal from Monongalia County, W. Va.
Preparation characteristics of coal from Boone County, W. Va.
Using a centrifuge for float-and-sink testing fine coal
Preparation characteristics of coal from Preston County, W. Va.
Using radiant heat to reduce coal filter-cake moisture :results of pilot plant tests
Preparation characteristics of coal from Harrison County, W. Va.
Washability characteristics of the lower Hartshorne (Spadra) coalbed near Clarksville, Ark.
Survey of sulfur reduction in Appalachian Region coals by stage crushing