Search U.S. government technical reports digitized or harvested by TRAIL.
Preparation of thin sections of coal
Annual report of research and technologic work on coal, fiscal year 1937
Annual report of research and technologic work on coal fiscal year 1938
Spontaneous combustion of coal
Annual report of research and technologic work on coal, fiscal year 1940
Annual report of research and technologic work on coal, fiscal year 1939
The various B.T.U. values of a coal
Annual report of research and technologic work on coal :fiscal year 1944
Annual report of research and technologic work on coal :fiscal year 1945
Annual report of research and technologic work on coal :fiscal year 1947
Annual report of research and technologic work on coal :fiscal year 1948
Annual report of research and technologic work on coal :fiscal year 1949
Coal-chemical materials produced at coke plants in the United States, 1948-57
Coal chemicals for world markets
Comparative evaluation of coking properties of four coals
Mechanical properties and cutting characteristics of coal
Laboratory studies on spontaneous heating of coal :a summary of information in the literature