Public domain
Workman weighing sample of gold ore and cyanide solution to determine if proper concentration of liquid is being maintained. Mogollon, New Mexico
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineWorkman weighing sample of gold ore and cyanide solution to determine if proper concentration of liquid is being maintained. 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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