Most hard hats I've ever had to wear are really only good for protecting against certain small classes of injuries anyway. If somebody drops a wrench or a hamm

Most hard hats I've ever had to wear are really only good for protecting against certain small classes of injuries anyway. If somebody drops a wrench or a hammer from an overhead catwalk, or if you're felling a tree and knock loose a widowmaker, it means it'll knock you down, rather than split your head. A thin plastic shell and the laughable harness in most of them doesn't do much aside from help capture condensation and steam up your safety glasses. When I was working in a powerplant, if you were working on the upper floors above the boiler, it was usually hot enough to start softening up the plastic on the cheaper ones.