Heroult, California. Interior of casting house showing electric iron smelting furnace of Noble Electric Steel Company. Shasta County, California. October 20, 1912. Courtesy U.S. Geological Survey. The USGS home page is http://www.usgs.gov.
This photograph is by carnkie and was uploaded December 31st 2009. © carnkie please do not copy or distribute without prior express permission.
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