Search U.S. government technical reports digitized or harvested by TRAIL.
Flocculation as an aid in the clarification of coal washery water
Burning bituminous and subbituminous coals on an anthracite, ash-removal-type, domestic stoker
Preparation tests of lignite from a deposit near Toledo, Lewis County, Wash.
Washability characteristics and washing of coals from the Matanuska field of Alaska