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 |