Some instruments and devices that coal-mine officials should understand and use

Author: Grove, G. W.
Year: 1938
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:7037
Series: Information circular / Bureau of Mines ;
Report Number: 7037
Subjects: Mine ventilation
Mine safety
Link: https://hdl.handle.net/2027/mdp.39015077575176

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