I have said this many times… one of the most hazardous tasks that can take place on industrial property is the loading/unloading of hazardous materials. So many things can go wrong and with the quantities being handled, hazards can get out of control quickly. So DOT has seen fit to require a “qualified attendant” during the loading and unloading process. However, DOT has offered a safe alternative to having a human “attend” each unloading/loading task. But this exemption comes with some true “engineering controls”. Here are the requirements for having a single human “attend” multiple unloading activities at the same time: