| Author: | Bauer, Eric R. |
|---|---|
| Additional Authors: | Hill, John L. |
| Year: | 1987 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:9117 |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 9117 |
| Subjects: | Coal mines and mining |
| Mine roof control | |
| Clay veins | |
| Link: | https://hdl.handle.net/2027/mdp.39015078479527 |