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Ben Bow chromite mill, Stillwater County, Montana. Classifiers are used to separate the slimy material from the coarser material; this coarser material is returned to the Hardinge ball-mills for further treatment
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Credit lineBen Bow chromite mill, Stillwater County, Montana. Classifiers are used to separate the slimy material from the coarser material; this coarser material is returned to the Hardinge ball-mills for furth. 1942-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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