Back when I was younger and worked in the steel mill I was accustomed to the heat. We did dust collector work while the furnaces were running and when they would blow temperature in the dust collectors often went over 200 degrees. We were dressed in our greens then put on two plastic suits with hoods to keep the contaminates out. Our rubbers gloves were wrapped with black electrical tape to again seal everything up. We wore full face respirators so we were breathing internal temperature air. Man I was in good shape back then.