The P&H4100 XPC is one of the most powerful diggers on the planet, capable of shifting 80 tons of dirt with one bite, but it’s got its work cut out for it. The Tilden and Empire mine on the Michigan peninsula produces 20 percent of America’s iron and that means moving massive quantities of ore, but there’s a problem – this mine has to endure a more snow than any other on the mainland USA. On its own the Hitachi 200 excavator is a formidable machine, but when it’s paired with the 5-bladed Waratah 622 cutting head it becomes an unstoppable wood-slicing tornado. Just as well, because East Alaska is in the grip of a big freeze, and the entire region is running low on firewood.