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Mine workers loading lead ore

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Loading lead ore at a mine near Creede, Colorado. Creede had been an important lead-producing center in the 19th century but was for many years a "ghost town" until lead mining resumed during World War II to produce metal needed for the war effort. (Source: Photograph by Andreas Feininger [1906-1999], December 1942. U.S. Office of War Information. Courtesy of the U.S. Library of Congress, Washington, D.C.)