Stemming in metal mines.

Author: Johnson, John A.
Additional Authors: Agnew, Wing G., Mosier, McHenry.
Year: 1940
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:3509
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 3509
Subjects: Blasting
Mine safety
Link: https://hdl.handle.net/2027/mdp.39015078491985

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