Oh, certainly. There are dozens of superheroes whose origins don't have anything to do with any sort of industrial accident, and there have been dozens of horrible industrial accidents which don't seem - so far - to have produced any superheroes (or supervillains) that we've yet heard about.
There does, however, seem to be a disproportionate correlation between the two types of event...
There does, however, seem to be a disproportionate correlation between the two types of event...