| Author: | Rice, George S. |
|---|---|
| Additional Authors: | Greenwald, H. P., Howarth, H. C. |
| Year: | 1933 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: | C 22.11:6755 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6755 |
| Subjects: | Coal mines and mining--Dust control--Pennsylvania--Pittsburgh |
| Mine dusts--Pennsylvania--Pittsburgh | |
| Link: | https://hdl.handle.net/2027/mdp.39015077572280 |