Document details
| Author: |
Forbes, J. J. |
| Additional Authors: |
Weaver, H. F.,
Back, T. L.
|
| Year: |
1951 |
| Document Type: |
USBI |
| Issuing Agency: |
U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: |
I 28.27:7605 |
| Series: |
Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: |
7605 |
| Subjects: |
Coal mines and mining--United States--Safety measures |
| Bituminous coal industry--United States--Safety measures |
| Mine roof control--United States |
| Link: |
https://hdl.handle.net/2027/mdp.39015078456186 |
