List of permissible mine equipment approved to January 1, 1942

Author: Ilsley, L. C.
Year: 1942
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:7207
Series: Information circular / Bureau of Mines ;
Report Number: 7207.
Subjects: Explosives
Coal mines and mining--Safety measures
Link: https://hdl.handle.net/2027/mdp.39015074126759

< New search