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Thickness of Bituminous Coal and Lignite Seams Mined in the United States in 1945

Description: Report issued by the U.S. Bureau of Mines discussing bituminous coal and lignite seams found in the United States. The thickness of seams from several U.S. states is compared, as well as the mining methods employed. This report includes maps, tables, and illustrations.
Date: December 1947
Creator: Young, W. H. & Anderson, R. L.
Partner: UNT Libraries Government Documents Department

Review of State Mine Inspector's Reports as They Relate to Accidents from Falls of Roof

Description: Report issued by the U.S. Bureau of Mines over state mine inspection reports from 19 U.S. states. The information in the reports includes details of accidents, locations that specific accidents occurred, and proposed remedies for prevention of future accidents. This report includes tables.
Date: April 1929
Creator: Paul, James Washington
Partner: UNT Libraries Government Documents Department

Comparative Yields of Light Oil, Tar, and Constituents from Carbonization Tests at 800 Degrees, 900 Degrees, and 1,000 Degrees Celsius

Description: Report issued by the U.S. Bureau of Mines on testing done on a variety of American coals collected from 32 coal beds across the country. The carbonizing properties of samples tested at 3 different temperatures are presented. This report includes tables, and graphs.
Date: March 1943
Creator: Holmes, C. R.; Wilson, J. E. & Davis, J. D.
Partner: UNT Libraries Government Documents Department

Ocher and Ochery Earths

Description: Report about ocher or ochery earth, "a natural mineral pigment composed largely of clay permeated with hydrated iron (ferric oxide)" (p. 2). It includes information about the uses of choer, substitutes, artificial ocher, mining and local deposits, import and export of ocher, and related information.
Date: May 1929
Creator: Santmyers, R. M.
Partner: UNT Libraries Government Documents Department