Public domain
Production. Tungsten. Tungsten ore traveling on a belt conveyor at a concentrating plant near Kingman, Arizona. The Boriana mine and plant at this point are producing large amounts of tungsten, for which there are many vital uses in the war effort. Boriana Mine, Arizona
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Credit lineProduction. Tungsten. Tungsten ore traveling on a belt conveyor at a concentrating plant near Kingman, Arizona. The Boriana mine and plant at this point are producing large amounts of tungsten, for wh. 1942-01-01. Henle, Fritz, United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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