Search U.S. government technical reports digitized or harvested by TRAIL.
A study of the Marshall-Bird test for determining the agglutinating value of coal
The effect of certain operating variables on the efficiency of the coal-washing table
Comparison of methods for determining friability of coal
Flotation processes for cleaning fine coal
Burning of various coals continuously and intermittently on a domestic overfeed stoker
Ball-mill grindability indexes of some American coals
Physical and chemical properties of cokes made or used in Washington