In this historical image that was provided by the Center for Disease Control's (CDC), National Institute for Occupational Safety and Health (NIOSH), a worker was in the process of welding a metal beam during the construction of the Queens Midtown Tunnel, in Queens, New York. One might assume that this subterranean atmosphere was being monitored, and that safe levels of potentially dangerous particulates and gasses, were required to be maintained. It could not be determined as to what protective clothing accessories were being worn by this worker, but hopefully, he was wearing a protective welding helmet, gloves, and a fire-retardant apron.
CDC/ Barbara Jenkins, NIOSH
December 3, 2012
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