Miners working a long sluice to separate gold from gravel
1883
Titled 'The Sluice', this Henry Sandham illustration shows crews running water and gravel down a wooden trough so that gold settles behind the riffles. It appeared in The Century illustrated monthly magazine in January 1883, part of a set on gold-rush mining methods. The Library of Congress holds the print.
Source: Wikimedia Commons
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