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    For extracting gold from low-grade ores, heap leaching is practiced; huge heaps are sprayed with a dilute solution of sodium cyanide, and this percolates down through the piled ore, dissolving the gold. There are very well defined rules for the safe and responsible use of cyanide as laid out in the International Cyanide Code. Gold refining

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    For extracting gold from low-grade ores, heap leaching is practiced; huge heaps are sprayed with a dilute solution of sodium cyanide, and this percolates down through the piled ore, dissolving the gold. There are very well defined rules for the safe and responsible use of cyanide as laid out in the International Cyanide Code. Gold refining

  • How Gold Mining Works Gold News BullionVault

    May 19, 2009· Remember: Many gold mines are located in difficult-to-reach areas, where reliable power is a long-off dream. And once the ore has been liberated from the ground, the gold will then need to be extracted from the ore. The processing consists of taking the big pieces of ore and making them smaller, until it reaches the consistency of beach sand.

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