| Author: | Puariea, Howard F. |
|---|---|
| Year: | 1932 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: | C 22.11:6626 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6626 |
| Subjects: | Dredges--Oregon--Portland |
| Mining engineering--Oregon--Portland | |
| Mines and mineral resources--Oregon--Portland | |
| Mineral industries--Oregon--Portland | |
| Link: | https://hdl.handle.net/2027/mdp.39015086485557 |