Parrothead,
Based on the past year's performance, for at least the LOM of the open cut (8 years).
Why do I say this?
Over the past year, the copper grade milled has gone from 1.63% to 1.1%, yet the concentrate has remained at 50%. With Ankata feeding in > 2% copper from later this year, I see no reason why the 50% concentrate cannot be maintained.
HT1
