Public domain
Rotary vacuum filter used for removing cyanide solution containing gold from the tailings. Gold mine at Mogollon, New Mexico
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineRotary vacuum filter used for removing cyanide solution containing gold from the tailings. Gold mine at Mogollon, New Mexico. 1940-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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