Author: | Herbert, C. A. |
---|---|
Year: | 1940 |
Document Type: | USBI |
Issuing Agency: | Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.27:7098 |
Series: | Information Circular / Bureau of Mines ; |
Report Number: | 7098 |
Subjects: | Mine roof control |
Cooling | |
Mine accidents | |
Mine ventilation | |
Link: | https://hdl.handle.net/2027/mdp.39015078534602 |