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The use of dust respirators in coal mines
| Author: | Pearce, S. J. |
|---|---|
| Year: | 1950 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7561 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7561 |
| Subjects: | Respirators (Medical equipment) |
| Breathing apparatus | |
| Coal mines and mining | |
| Link: | https://hdl.handle.net/2027/mdp.39015078455576 |
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