The previous Managing Director said at the AGM that there is NO COPPER present in the ore. I guess that this is over-simplified, because there should be some copper present. That is why I am suggesting that some bornite should be present in the sub-oxide zone. The dominant sulphide should still be pyrite.
As for costs. One can only wait and see how the plant works.
Ann: June 2018 Quarterly Report, page-13
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