The refine scrap gold as i search one time on the internet find interesting that the refiners and smelters accept many different metals in addition to gold. Palladium, silver, titanium and platinum are examples of other metals which can also be refined, though the length of time which it takes to refine some metals is longer than it takes to refine others due to the fact that some metals and amalgams require special treatments as part of the refining process. If you trade metal in for bullion or cash, your refiners will give you an estimate.
You can find details and information after you had follow the site on my link. Information that can also give you more details about the scrap gold. Why is is that on the movie and even in the true to life many people had found their interest in looking and finding for the refine one that just any other gold.