Qtly Report Update, page-63

"Yes the difference normally is that sulphide ore is harder and normally of lower grade and generally needs more complicated processes to liberate the metal. When you are dealing with millions of tonnes in an open pit scenario this can lead to added costs."

Would not the sulphide ore be the deeper fresh ore , rather than the shallower oxide ore ?
If that is the case then the sulphide ore will have a higher grade rather than the lower grade you state as according to the Sept presentation open pit reserves are 21MT @1.5 g/t and underground reserves are 3Mt @3.6g/t

Also you mention " if the rock is hard this is a major advantage "
What is the advantage of ore that is harder as I was thinking that would mean a higher BMI ie higher power and wear costs ?