 |
|
Milling methods and costs at the Superior concentrator of the Engels Copper Mining Co., Plumas County, Calif.
| Author: | Nelson, W. I. |
|---|---|
| Year: | 1932 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: | C 22.11:6550 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6550 |
| Subject: | Copper mines and mining--California--Plumas County |
| Link: | https://hdl.handle.net/2027/mdp.39015077561838 |
Search developed and maintained by the University of Washington Libraries
Copyright 2010