Safety catches on mine cages and methods of testing them

Author: Harrington, D.
Additional Authors: East, J. H.,
Year: 1948
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:7436
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 7436
Subject: Mine safety
Link: https://hdl.handle.net/2027/mdp.39015077577750

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