| Author: | Bauer, Eric R. |
|---|---|
| Additional Authors: | Chekan, G. J. |
| Year: | 1981 |
| Document Type: | TPRM |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines ; |
| SUDOC: | I 28.26/6:113 |
| Series: | Technical progress report ; |
| Report Number: | 113 |
| Subjects: | Ground control (Mining) |
| Mine shafts | |
| Mining engineering--United States | |
| Link: | https://hdl.handle.net/2027/mdp.39015077582990 |