| Author: | Andreuzzi, Frank C. |
|---|---|
| Year: | 1970 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Bureau of Mines; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., |
| SUDOC: | I 28.27:8485 |
| Series: | Bureau of Mines. Information circular 8485 |
| Subjects: | Air--Pollution |
| Coal mines and mining--Safety measures | |
| Coal mine waste | |
| Link: | https://hdl.handle.net/2027/mdp.39015078461780 |