ATM, page-100

I gave you a real world example of a mine producing an AISC of around $600/oz, one of the longest running highest grade mines that has ever been listed on ASX.

If you can't understand that the reason for such low AISC is not just the grade but also the mine capacity and recovery, I can't help you further. If you spent more time looking at the broader industry you'd find that these sort of AISC are very unusual and also dependent on scale. Esh