Public domain
Pouring mercury from small tube into pen which contains flour gold mixed with the natural dirt. Process for removing this flour gold is described in caption 12693-M5. Pinos Altos, New Mexico
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit linePouring mercury from small tube into pen which contains flour gold mixed with the natural dirt. Process for removing this flour gold is described in caption 12693-M5. Pinos Altos, New Mexico. 1940-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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