This historical image was provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH). Wearing protective clothing, i.e., coveralls and gloves, and a face shield, the photograph depicted a factory worker seated at a Garfield Smelter�, that was smelting copper at the Seifert, Utah, American Smelting & Refining Co. Note the placement of the mobile exhaust hose immediately adjacent to the worksite. It cannot be determined from this image whether or not the man was wearing a filtered breathing mask.
CDC/ Barbara Jenkins, NIOSH
December 3, 2012
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