I can be working on a 2,200 degree kiln at times that is a couple hundred feet long .. with double layers of clothing on, in the sun, hardhat, steel toed water proof boots, yadda yadda.. heavy industrial.. yea.. I think I have one of the hottest and dustiest work environments of people on here. Not to mention our coating oil tanks and sulfuric acid, phos acid plants that are fun to be around.. Only place that I have been which is hotter, would be the Teco Power Plant.