Iron man

You don't have to be an iron man and do all the work yourself: there are people here who can help you.

This time it was thirty-five grand, a whole damn marching battalion of iron men, […]

Somebody had sense enough to tell Elmer to hold out until the bids were all in, which accounts for his getting four thousand big iron men for his first season's work, instead of fifteen hundred, like the rest of the bush heavers.