Mine safety and accident economy in Colorado metal mines

Author: Denny, E. H.
Year: 1930
Document Type: MAIN
Issuing Agency: U.S. Dept. of Commerce, Bureau of Mines,
SUDOC: C 22.11:6275
Series: Information circular ;
Report Number: 6275
Subject: Mine safety--Colorado
Link: https://hdl.handle.net/2027/mdp.39015095083682

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