Accidents from hoisting and haulage in bituminous-coal mines ;Coal-mine accident-prevention course.

Year: 1955
Document Type: MAIN
Issuing Agency: U.S. G.P.O.,
SUDOC: I 28.6:49/955
Series: Miners' circular ;
Report Number: 49
Subject: Coal mine accidents--United States--Prevention
Link: https://hdl.handle.net/2027/mdp.39015077562489

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