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![Back into production go these carloads of scrap metal, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. The melting of alloy steels for defense work requires that steel mill scrapyards such as this be constantly filled. The overhead magnet deposits the](http://farm3.static.flickr.com/2404/2179220446_6c5536feed_m.jpg)
Back into production go these carloads of scrap metal, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. The melting of alloy steels for defense work requires that steel mill scrapyards such as this be constantly filled. The overhead magnet deposits the
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)

At EPA's National Environmental Research Center at Las Vegas, samples of food and water undergo constant testing for radiation, May 1972
by U.S. National Archives
by U.S. National Archives
No known copyright restrictions(著作権制限なし)
601件~660件 (全 31,910件)