L. E. Geyer

Mining Petroleum by Underground Methods

A Study of Methods Used in France and Germany and Possible Application to Depleted Oil Fields Under American Conditions

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Laboratory Studies of the Inflammability of Coal Dusts

Effects of Fineness of Coal and Inert Dusts on the Inflammability of Coal Dusts

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Coal-mine Accidents in the United States, 1942

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Coal-mine Accidents in the United States, 1937

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Metal-mine Accidents in the United States During the Calendar Year 1938

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Metal-mine Accidents in the United States During the Calendar Year 1936

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Coal-mine Accidents in the United States, 1932

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Coal-mine Accidents in the United States, 1936

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Quarry Accidents in the United States During the Calendar Year 1939

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Coal-mine Accidents in the United States, 1931

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Coal-mine Accidents in the United States, 1941

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Coal-mine Accidents in the United States, 1940

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Coal-mine Accidents in the United States, 1934

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Coal-mine Accidents in the United States, 1935

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Coal-mine Accidents in the United States, 1933

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Coal-mine Accidents in the United States, 1930

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Coal-mine Accidents in the United States, 1939

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Coal-mine Accidents in the United States, 1938

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Contributions to the Data on Theoretical Metallurgy

The thermodynamic properties of sulphur and its inorganic compounds. VII

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Coal-mine Accidents in the United States, 1940

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Coal-mine Accidents in the United States, 1939

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