If you spend more time looking past the headline numbers, the...

If you spend more time looking past the headline numbers, the performance was not as bad as the market reaction suggests it was:
In Dec Duckhead is expected to produce 40,000oz at 7g/t
Assuming 90% recovery, contained gold 44,444oz. Mill feed 197kt (@7g/t). Waste movement assuming 10:1 =1.97Mt waste
In Sep qtr Duckhead waste movement 57%*3Mt or 1.71Mt of which c148kt of waste was associated with 3koz produced during the qtr.
Remaining waste movement in Dec qtr relating to Duckhead = 1.97Mt -1.71Mt +0.15Mt = c0.3Mt

If the cost associated is assumed at US$5/t. Cost associated with waste movement (Duckhead) in Sep qtr 5*1.7Mt =US$7.5M

Cost associated with waste movement (Duckhead)in Dec Qtr = 5*0.3Mt = US$1.5M

DYOR