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a method and system for recovering gold and other noble metals from geologic bodies of fresh and salt water wherein a mixture of water and sediment is drawn from the body of water passed as an influent through a cation exchanger of the type containing crosslinked resinous particulates charged with sodium or hydrogen at controlled flow rates and the exchanger effluent returned to the
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“we mixed nitric acid and hydrobromic acid then we dissolved gold in the solution to extract it from the ore” he told australian mining. by using this method liu explained that the leach