| Author: | Harrington, D. |
|---|---|
| Year: | 1938 |
| Document Type: | USBI |
| Issuing Agency: | U. S. Bureau of Mines, |
| SUDOC: | I 28.27:7041 |
| Series: | Information circular / United States. Bureau of Mines ; |
| Report Number: | 7041. |
| Subjects: | Coal mines and mining--Dust control |
| Mine explosions--Prevention and control | |
| Mine dusts--Safety measures | |
| Link: | https://hdl.handle.net/2027/mdp.39015077575226 |