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41by Miller, Wayne K.“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Published 1975
Government Document Book -
42by Schlick, Donald P.“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Published 1975
Government Document Book -
43Published 1977“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Government Document Book -
44by Oitto, Richard H.“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Published 1975
Government Document Book -
45Published 1975“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Government Document Book -
46by Misaqi, Leo“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Published 1975
Government Document Book -
47“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Government Document Book -
48Published 1975“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Government Document Book -
49by Rock, Robert L.“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Published 1975
Government Document Book -
50by McLellan, Russell R.“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Published 1975
Government Document Book -
51Analysis of disabling injuries related to roof bolting in underground bituminous coal mines - 1973 /“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Government Document Book -
52by Misaqi, Leo“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Published 1975
Government Document Book -
53by Thatcher, John W.“...Informational report (United States. Mining Enforcement and Safety Administration) ;...”
Published 1975
Government Document Book -
54
Government Document Microform Serial