I listened to that interview , in it they stated they needed to...

I listened to that interview , in it they stated they needed to get met results done before looking at the direction forward .

Since then Met results have come out a (couple of months back ) , to me the flow sheet for the highest recoveries looked complex which is understandable as base metals and even Ag in the ore can negatively impact Au recoveries (carbon loading ) , so the highest recovery process also included a flotation circuit , and I am guessing will also possibly need a Meryl Crowe circuit (Ag) to remove what really are deleterious elements .
Also the grind size was around 70 microns , that is close to the limit a ball mill will grind to , not refractory but close to it , although it was interesting that they used a lab rod mill rather than a lab ball mill to do the grinding (maybe the ore is soft which is an advantage ) to keeping the BWI lower ?
It would be interesting to see the recovery results of a larger grind size around 0.12 mm as maybe could allow plants that only have a SAG mill to toll process the ore also would lower the BWI

The above are just my personal opinions .