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Classification chart of typical coals of the United States :showing B.t.u. per pound on the moist, mineral-matter-free basis, plotted against fixed carbon on the dry, mineral-matter-free basis

Carbonizing properties of western region interior province coals and certain blends of these coals

Coal-research activities of the Bureau of Mines

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

Analyses of tipple and delivered samples of coal :collected during fiscal year 1954

Evaluation of an acid-extraction method for determining mineral matter in American coals

Bureau of mines research and technologic work on coal, 1960

Bureau of mines research and technologic work on coal, 1959

Production of mineral fuels and hydropower in the United States since 1800

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

Sulfur content of United States coals

Forms of sulfur in U.S. coals

Major ash constituents in U.S. coals

Prediction of coke strength of American coals by the Ruhr dilatometer method

Demonstrated reserve base of U.S. coals with potential for use in the manufacture of metallurgical coke

Spontaneous combustion susceptibility of U.S. coals


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