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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.