| Author: | Brown, C. L. |
|---|---|
| Additional Authors: | Gallagher, F. J., Hyvarinen, John. |
| Year: | 1949 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:4537 |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 4537 |
| Subjects: | Coal mines and mining--Safety measures |
| Coal mines and mining--Equipment and supplies | |
| Coal mines and mining--Electric equipment | |
| Compressed air | |
| Link: | https://hdl.handle.net/2027/mdp.39015078486225 |