AISC question, page-3

In September quarter they stripped a lot of waste, hence high aisc, in December qtr they mined the high grade stuff that was under the waste. That was at duckhead pit which is pretty much done now (for the time being). Back to Tucano now which is lower grade hence the higher aisc. On the plus side tucano seems like a simpler operation so hopefully will avoid the surprises that duckhead so often provided last year.