Image: 1904HerculesSilverMineIdaho
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Description: 1904 Hercules Silver Mine, Idaho
Title: 1904HerculesSilverMineIdaho
Credit: 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
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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