My 57 year old husband has diabetes and now uses insulin. He works in a steel mill handling very hot steel after it comes out of the molds. The ambient temperature on the steel runs between 900 to 1000 degree. My husband works around them. He once used an over thermometer to measure the air temperature in the area he works in and it pegged at the highest point. His blood sugar has been ranging high despite watching his diet carefully and taking his insulin religiously. I have noticed that his feet are showing heavy blistering from the heat which I suspect is due to his being diabetic. My question is: Is he taking a risk working under these extreme high heat conditions. I am very concerned for his continued health.