| Author: | Anderson, Robert L. |
|---|---|
| Year: | 1951 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7591 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 7591 |
| Subjects: | Coal washing |
| Bituminous coal | |
| Coal mines and mining--Statistics | |
| Link: | https://hdl.handle.net/2027/mdp.39015078455675 |