Year: | 1966 |
---|---|
Document Type: | USBI |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.27:8306 |
Series: | Information circular / United States. Bureau of Mines ; |
Report Number: | 8306 |
Subjects: | Coal mines and mining--Safety measures |
Mine safety | |
Mining engineering--Safety measures | |
Coal mines and mining--research | |
Link: | https://hdl.handle.net/2027/mdp.39015078514588 |