Ann: Quarterly Activities Report, page-32

The sulphide plant has had insufficient feed from underground at this stage and operated on a head grade of 1.7 g/t this Q so the reason it's underperforming is obvious .
As more underground ore becomes available and they cease to rely on low grade stockpiles the head grade will go up and seems recovery as well .
(When they've used solely u/g ore it's operated +85% recovery .)
Operations at Syama have turned the corner but improvement will be gradual for a couple of quarters with commissioning and ramping  .
At this stage I'm not seeing any indications of technology etc not working so presumably all looking good at this stage for a decade of steady underground production .
Not seeing any reason to be so fixated on something that is at present predictably bad but soon to change .