1904HerculesSilverMineIdaho.png
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Summary
Description 1904HerculesSilverMineIdaho.png |
English:
1904 Hercules Silver Mine, Idaho
|
Date | |
Source | The geology and ore deposits of the Coeur d'Alene district, Idaho, USGS Professional Paper 62, https://pubs.er.usgs.gov/publication/pp62 |
Author | U.S. Dept. of the Interior, USGS, F. L. Ransome and Frank Cathcart Calkins |
Licensing
Public domain Public domain false false |
This image is in the
public domain
in the United States because it only contains materials that originally came from the
United States Geological Survey
, an agency of the
United States Department of the Interior
. For more information, see
the official USGS copyright policy
.
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