| Author: | Cervik, Joseph. |
|---|---|
| Year: | 1969 |
| Document Type: | TPRM |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines ; |
| SUDOC: | I 28.26/6:10 |
| Series: | Technical progress report ; |
| Report Number: | 10 |
| Subjects: | Coal mines and mining |
| Mine gases | |
| Link: | https://hdl.handle.net/2027/mdp.39015077584061 |