![](http://www.alamy.com/thumbs/6/909AC95B-1761-42E1-9609-7A90A3526E3E/HFHH42.jpg)
Image taken from page 164 of 'Notes on the Treatment of Gold Ores' Image taken from page 164 of 'Notes on the Treatment
Size: 1922px × 1300px
Photo credit: © Classic Collection 2 / Alamy / Afripics
License: Licensed
Model Released: No
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