i dont know what it does but i do know how to get it i allso got it in game. if you are continually using ur shovel it turns golden and this just basically improves your chances of getting good stuff when u dig. like more blood money zombie bloods and guns and obviously the helmet. i did however notice that when i eventually died while i had the helmet that i took way more hits than normal with jugs. otherwise maybe it saves u from being squished by the giant robot if anyone wants to test this theory. but yeah to get just keep digging.
