| Author: | Ellenberger, John L. |
|---|---|
| Year: | 1979 |
| Document Type: | BMRA |
| Issuing Agency: | Dept. of Interior, Bureau of Mines, |
| SUDOC: | I 28.23:8365 |
| Series: | Report of investigations / Bureau of Mines ; |
| Report Number: | 8365 |
| Subjects: | Ground control (Mining) |
| Rock mechanics | |
| Coal mines and mining--West Virginia | |
| Link: | https://hdl.handle.net/2027/mdp.39015078482208 |