Search U.S. government technical reports digitized or harvested by TRAIL.
Gases commonly used in the industries and the home and their hazards
Work of the experiment stations of the Bureau of Mines
Recent developments in the production of motor fuels from coal
Research activities in the mineral industries of the United States
Annual report of research and technologic work on coal, fiscal year 1937
Annual report of research and technologic work on coal fiscal year 1938
Annual report of research and technologic work on coal, fiscal year 1940
Annual report of research and technologic work on coal, fiscal year 1939
Annual report of research and technologic work on coal :fiscal year 1944
Annual report of research and technologic work on coal :fiscal year 1945
Coal-research activities of the Bureau of Mines
Annual report of research and technologic work on coal :fiscal year 1947
Annual report of research and technologic work on coal :fiscal year 1948
Achievements in mine safety research and problems yet to be solved
Annual report of research and technologic work on coal :fiscal year 1949
Annual report of research and technologic work on coal :fiscal year 1950