Guys . toquepala is mining copper at a cut off grade at the moment of 0.14% because of copper price and at a cost of $0.33 cents per lb of copper after credits for moly.gold and silver . Los Calatos could already be plus 1 billion tonnes now using the same cut off grade .the usual cut off is 0.2 % for these big operations but as i said because copper price/low cost of production it gives los calatos many options especially as every hole so far is mineralised.
henry review , page-10
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