The miner's ounce of prevention--the operator's pound of cure

Author: Ryan, W. D.
Year: 1930
Document Type: USBI
Issuing Agency: U.S. Dept. of Commerce, Bureau of Mines,
SUDOC: C 22.11:6282
Series: Information circular / Bureau of Mines ;
Report Number: 6282
Subject: Mine safety
Link: https://hdl.handle.net/2027/mdp.39015077576406

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