A Delicate Situation: Dark Iron Bar

Attention all heroes! We are in need of your immediate assistance! Our smelters recently formed a union and went on strike! Something about a workplace injury that we missed, with all their complaining, I honestly can't remember what this was all about. Anyways, this is a delicate situation, and we have deadlines to meet... Smelt 1 Dark Iron Bar. Naturally, you will be handsomely rewarded for your assistance, hero.