Also, what is the difference between death metal and dark metal?
Metal is first divided into the various types then each type is sent to a specific furnace which melts the metal down and impurities are skimmed off to maintain purity. Then the molten metal is poured into a mold, hardened then brought to a refinery where it is refined to a very high % then poured into bars weighing about 30 lbs. then sold to customers all over the world. I live in a smelter toen and we deal with this all fo the time. My summer jobs while in University included this work.