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heap leaching of gold and silver ores - . mining of ore for heap leaching employs the same techniques and equipment as mining of ore to feed any other process method. where uncrushed ore (run-of-mine (rom) ore) is placed on the leach pad, ore may be blasted very heavily in order to reduce rock size and improve gold recovery. in high-rainfall environments when processing clay-rich material, it is very important to practice a mining ...

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copper mining and processing: processing of . copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.the most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different ...

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