Production. Tin smelting. Tapping the furnace of a Southern tin smelter in which pure tin is extracted from the raw ore of South American mines. Here tin is drawn off into floats which weigh about eighteen tons when filled. The metal is then conveyed to polling kettles, where dross or skimmings are drawn off and forwarded to another furnace for re-melting

Actual size of negative is C (approximately 4 x 5 inches).
Caption card lists some of the printing history of image.
Title and other information from caption card.
Transfer; United States. Office of War Information. Overseas Picture Division. Washington Division; 1944.
More information about the FSA/OWI Collection is available at http://hdl.loc.gov/loc.pnp/pp.fsaowi
Film copy on SIS roll 31, frame 1826.