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 |