{HEAD ~ The gold} contained in {TAIL ~ the residue} or intermediate product is leached using bivalent copper and oxygen in copper chloride sodium chloride solution in the conditions, where the oxidation reduction potential is a maximum of 650 mV and the pH at least 1 
contained in
{ HEAD ~ The gold } contained in { TAIL ~ the residue } or intermediate product is leached using bivalent copper and oxygen in copper chloride sodium chloride solution in the conditions , where the oxidation reduction potential is a maximum of 650 mV and the pH at least 1
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH