Public domain
Production. Tin smelting. "Bars" of pure tin are trimmed and cleaned before removal from the molds in which they were formed in a Southern smelter. All the trimmings are returned to the "pot boilers" for remelting. The plant, finest and most modern in the world, extracts the pure metal from South Am
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Credit lineProduction. Tin smelting. "Bars" of pure tin are trimmed and cleaned before removal from the molds in which they were formed in a Southern smelter. All the trimmings are returned to the "pot boilers" . 1942-01-01. Hollem, Howard R., United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.