Permissible explosives, mining equipment, and apparatus approved prior to January 1, 1925

Additional Authors: Crawshaw, John Edwards,, Fieldner, A.C., Parker, D.J., Ilsley, L.C., Perrott, G. St. J.
Year: 1925
Document Type: USBM
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines :
SUDOC: C 22.5:376
Series: Technical paper / United States Department of the Interior, Bureau of Mines ;
Report Number: 376
Subjects: Explosives
Coal mines and mining--Safety measures
Link: https://hdl.handle.net/2027/mdp.39015078542811

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