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  • MINING CoinMine

    Are these grades good? The following are considered 'high grades' for the purposes of most North and South drilling programs: G reater than 5 g/t gold and 15 g/t silver

  • Chapter 82 Metal Processing and Metal Working Industry

    The metal smelting and refining industry processes metal ores and scrap metal to obtain pure metals. The metal working industries process metals in order to ...

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