Miner's yearly and daily output of coal /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1920

The National safety competition of 1930 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : Dept. of Commerce, U.S. Bureau of Mines, 1931

Coal-mine fatalities in June, 1924 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1924

Coal-mine fatalities in December, 1924 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1925

The National safety competition of 1929 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of Commerce, Bureau of Mines, 1930

The National safety competition of 1928 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of Commerce, Bureau of Mines, 1929

The National safety competition of 1935 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1936

The National safety competition of 1934 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1935

Coal-mine fatalities in November, 1924 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1924

Coal-mine fatalities in February, 1925 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1925

Coal-mine fatalities in January, 1925 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1925

The National safety competition of 1932 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : Dept. of the Interior, U.S. Bureau of Mines, 1933

The National safety competition of 1933 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1934

Coal-mine fatalities in October, 1924 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1924

The national safety competition of 1936 /

by Adams, W. W. (William Waugh), 1884-1945
[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1937

Coal-mine fatalities in May, 1924 /

by Adams, W. W. (William Waugh), 1884-1945
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1924

Use of rock dust in bituminous-coal mines during 1930, 1931, and 1932 /

by Adams, W. W. (William Waugh), 1884-1945
[Washington, D.C.] : United States Bureau of Mines, 1934

Accident-severity rates for certain mines and quarries in 1927 /

by Adams, W. W. (William Waugh), 1884-1945
1Washington, D.C. : U.S. Department of Commers, Bureau of Mines, 1928

Coal-mine fatalities in February, 1923 /

by Adams, W. W. (William Waugh), 1884-1945
[Washington, D.C.] : U.S. Department of the Interior, Bureau of Mines, 1923

National safety competition of 1938 /

by Adams, W. W. (William Waugh), 1884-1945, Lawrence, T. D.
Washington, D.C. : U.S. Department of the Interior, Bureau of Mines, 1939