Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Some means for prevention of injury by falls of roof
Accident statistics data; fatalities and injuries resulting from falls of roof material; routine in proper care of roof. Before Mine Inspectors Inst. Am.
Some means for prevention of injury by falls of roof
Accident statistics data; fatalities and injuries resulting from falls of roof material; routine in proper care of roof. Before Mine Inspectors Inst. Am.
Some means for prevention of injury by falls of roof
Coal Min
Paul, J.W. (Autor:in)
Coal Mining ; 8
1931
Aufsatz (Zeitschrift)
Englisch
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Causes and prevention of mine roof falls
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Places of occurrence of injury from falls of roof
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Conserving labor by preventing roof falls
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