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Typical Copper Ore Grades

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At a gold price of us1000 per ounce the value of the gold in the block of ore is just under 96 100031 x 3 or 1000 per ounce 31 grams troy ounce x 3 grams of gold simply put, if it were to cost more than 96 to mine, treat, and extract the gold from that tonne of ore, it would be uneconomic to mine.

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