There's really no reason why we shouldn't have steel mills aside from that.
If you want tariff that option away from a bunch of China-men, have them do the next even shittier dangerous job that they bypassed on the way to the steel mill, and then save them while you instead work next to molten iron, that's the proposition you're moving towards.
Of course if you want a little taste of being that hero, there are domestic steel mills currently hiring, you can take that job so the next guy in line won't get maimed. But somehow I think you won't, so you must be "all cool" they are "instead maimed."
I'm not sure what you're arguing for here, but you come off as morally bankrupt. Worker safety can certainly be improved but people like you happily shrug it off and are fine with hazardous cost cutting which allows people to continue to be maimed as long as you're steel or whatever is super cheap.