| Author: | Kim, Ann G. |
|---|---|
| Year: | 1974 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Bureau of Mines, |
| SUDOC: | I 28.23:7969 |
| Series: | Report of investigations / Bureau of Mines ; |
| Report Number: | 7969 |
| Subjects: | Coal mines and mining--Safety measures |
| Methane | |
| Mine gases | |
| Link: | https://hdl.handle.net/2027/mdp.39015078484428 |