A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Administration of federal coal-mine safety act, 1952-62
Work of Div of Coal Mine Inspection, Bureau of Mines, as performed under provisions of Federal Coal Mine Safety Act; information and data since 1952 when Act became effective; statistics for calendar year 1962; during that year, approximately 9704 coal mines were active in United States, and Bureau made 12,810 regular inspections.
Administration of federal coal-mine safety act, 1952-62
Work of Div of Coal Mine Inspection, Bureau of Mines, as performed under provisions of Federal Coal Mine Safety Act; information and data since 1952 when Act became effective; statistics for calendar year 1962; during that year, approximately 9704 coal mines were active in United States, and Bureau made 12,810 regular inspections.
Administration of federal coal-mine safety act, 1952-62
U S Bur Mines -- Information Cir
Westfield, J. (author) / Weaver, H.F. (author) / Keenan, C.M. (author)
1963
53 pages
Article (Journal)
English
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