Search U.S. government technical reports digitized or harvested by TRAIL.
Determination of the size distribution of fine coal particles by the electron microscope
A graphical form for applying the Rosin and Rammler equation to the size distribution of broken coal
Coal-research activities of the Bureau of Mines
Continuous hydraulic classification :constitution of the teeter column throughout its depth
Annual report of research and technologic work on coal :fiscal year 1950
Annual report of research and technologic work on coal :fiscal year 1951
Annual report of research and technologic work on coal and related investigations :fiscal year 1952
Research and technologic work on coal and related investigations :1954
Hydraulic coal mining research :equipment and preliminary tests
Bureau of mines research and technologic work on coal, 1960
Effects of selected operating variables on continuous-cell flotation of coal :a laboratory study
Bureau of mines research and technologic work on coal, 1959
Bureau of mines research and technologic work on coal, 1962
Bureau of mines research and technologic work on coal, 1961
Bureau of Mines research and technologic work on coal, 1963
Bureau of mines research and technologic work on coal, 1964
Coal research organizations :worldwide activities and publications
Basic coal research in the United States.
Review of Bureau of Mines coal program, 1967
Coal investigations using laser irradiation
Review of Bureau of Mines coal program,1969