 |
|
Electric signaling system, Ross shaft, Homestake Mining Co.
| Author: | Wiggert, John F. |
|---|---|
| Year: | 1937 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:6979 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 6979 |
| Subject: | Mines and mineral resources |
| Link: | https://hdl.handle.net/2027/mdp.39015077569955 |
Search developed and maintained by the University of Washington Libraries
Copyright 2010