Public domain
Untitled photo, possibly related to: Phelps Dodge refining company, El Paso, Texas. Charging sheets of copper, produced by electrolysis, into a reverbatory furnace
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineUntitled photo, possibly related to: Phelps Dodge refining company, El Paso, Texas. Charging sheets of copper, produced by electrolysis, into a reverbatory furnace. 1942-01-01. Henle, Fritz. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.