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Cost of Producing Concentrates from Ore 911 Metallurgist. Apr 12, 2017 . Cost per ounce of gold is given for a few gold mines in North America in table 17 of Bulletin 363. . ores containing, for example, silver, gold, lead, zinc, and copper. . some merely set up a charge for amortization of plant and buildings. . including major shaft sinking and other projects, in the years during.