| Author: | Barczak, Thomas M. |
|---|---|
| Additional Authors: | Schwemmer, David E. |
| Year: | 1990 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:9327 |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 9327 |
| Subjects: | Longwall mining |
| Mine roof control | |
| Link: | https://hdl.handle.net/2027/mdp.39015078479295 |