The National Safety Competition to assist in the reduction of mine and quarry accidents

Author: Adams, William W.
Year: 1929
Document Type: USBI
Issuing Agency: U.S. Dept. of Commerce, Bureau of Mines,
SUDOC: C 22.11:6109
Series: Information circular / United States Department of Commerce, Bureau of Mines ;
Report Number: 6109
Subjects: Coal mine accidents
Coal mines and mining--United States
Link: https://hdl.handle.net/2027/mdp.39015077570169

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