So the plant upgrade delivers an extra 5% recovery. At 1.05g/t that equates to $2.05/t of ore processed. Lets say it takes 70c/t to run the ball mill, pre-leach thickener, leach tank and oxygen plant and the the extra revenue drops to $1.35/t. They process around 3.5Mtpa so the extra revenue after the upgrade is less than $5M per annum.
Draw your own conclusions....
Ann: June 2018 Quarterly Report, page-37
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