Placer Mining - Columbia, Tuolumne Co., from the top of the dump-box.
Summary
Picryl description: Public domain image related to an industrial revolution, industry history, factory building, free to use, no copyright restrictions image.
Tags
Date
1863 - 1868
Source
New York Public Library
Copyright info
Creative Commons CC0 1.0 Universal Public Domain Dedication ("CCO 1.0 Dedication")