Ann: Preliminary Pilot Plant Results, page-51

At the AGM:
I believe they stressed that the pilot plant (concentrator) is specifically to produce all these assay results and to use these to design and set up the main processing plant.
Based on this info and the stated ratio of 4:1 and as an aveage from the two batches sent away, it is:

4 ton of ore to get 1 ton of concentrate that gives them 233g/t of gold from the ore 865g/t of silver a hell of a lot

Noted that it is likely that they have not put 4 ton through the pilot plant. maybe they have but IMO they are using it to test areas rather than trying to produce larger quanties. Doing small batches for the design of the main plant - the sooner they get this running the better and that is their focus.
From what I gather via comments on here and sharetrader after the AGM the pilot plant is very much in test mode only doing very small batches. i.e. just under 5kg of ore would produce the 1.2kg of concentrate they had on show.
8kg would produce the "2kg batch of centrifuge concentrate is being assayed and prepared for dispatch to a Major New Zealand based concentrate end user for testwork to form the basis of a commercial off take agreement"

I could be completey wrong here but this dose make sence. Even with cheery picking the Ore that is extreamly Hi recovery rate IMO.

I think i now understand the importance of the polit plant and why it will never see mass throughput through it.
Bring on the full production plant I say.
By the time they get it they will have all the key areas assessed and know exactly where and what ore to process.
Hopfully they get to that stage without been brought out as I see the upside of this being huge.