Last winter, Carhartt spent a few days in one of the coldest towns in America - Ironwood, Michigan. Located in the Upper Peninsula, the residents here often go months without seeing temps climb above freezing. Still, despite the brutal cold, you won't hear any complaints out of these Yoopers. Could be they're just too busy working to waste time complaining. Then again, maybe they just don't want to risk getting frost bit on their lips? Either way, meet the folks who work 24/7 to keep Ironwood running.