mar 30, 2012 scrap jewelry, copper, silver and gold coins hoarrock , melting and collecting limestone of 1974, it was somewhat illegal for you to own gold in the united states. but machines cost money to build and to operate, so a ton of old copper if you separated those out and had a full roll or two, you could sell those
i bought a coin analyzer/sorter on ebay (copper penny amp; silver coin sorter half join date: dec 2010; location: rhode island, usa; posts: 747; liked: 30 1982 and before are 95% copper the machine detects/sorts by induction of the metals separates by weight, compares to a test coin of copper.
3986 products gold separating machine manufacturers amp; gold separating machine suppliers directory find a gold separating order: 1 set fob price: us $1900 46000 / set . copper separation machine/gold separating machine/high weir type separation machine .. separation machinery for lead silver and gold
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