| Author: | Boyd, William T. |
|---|---|
| Year: | 1959 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines : |
| SUDOC: | I 28.27:7887 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7887 |
| Subjects: | Coal mines and mining |
| Coal slurry pipelines | |
| Hydraulic mining | |
| Link: | https://hdl.handle.net/2027/mdp.39015078455006 |