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Summary
| Description |
English: Mill and cyanide plant of the Champion-Providence Group. Photo by C. A. Logan. |
| Date | |
| Source | California State Mineralogist (1919) Report of the State Mineralogist (Public domain ed.), California State Office |
| Author | California State Mineralogist |
Licensing
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:25, 4 July 2016 | | 260 × 449 (143 KB) | Rosiestep | User created page with UploadWizard |
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