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1
Coal mine safety inspection manual for underground mines.
[Washington] : [U.S. Dept. of the Interior, Bureau of Mines], 1972

Government Document Book
2
Coal mine safety inspection manual for surface coal mines and surface work areas of underground coal mines.
Washington, D.C.] : United States Department of the Interior, Bureau of Mines, 1971

Government Document Book
3
Coal mine safety inspection manual for underground mines.
[Washington] : [U.S. Dept. of the Interior, Bureau of Mines], 1972

Government Document Book
4
Coal mine safety inspection manual for surface coal mines and surface work areas of underground coal mines.
Washington, D.C.] : United States Department of the Interior, Bureau of Mines, 1971

Government Document Book
5
Coal mine safety inspection manual for underground mines.
Washington, D.C. : U.S. Depart,emt of the Interior, Bureau of Mines, 1971

Government Document
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