National Geographic : 1947 Apr
(9) National Geographic Society Kodachrome by Willard R.Culver Electromagnetic Cranes, Loading Five Tons in One Grab, Toil in Steel's Graveyard, Resurrecting Scrap Rusty rails, boilers, fences, old guns, and tanks move to open hearths at Sparrows Point, Maryland, for regeneration as steel for ships and automobiles. Blast furnaces, smelting iron ore, produce only half of the metal required for our steel needs. Scrap makes up the other half. Collections have dropped since the war.