Interesting assumptions biggle, but I too have been having...

Interesting assumptions biggle, but I too have been having trouble making sense of it. I read the 'gold in concentrate' a little differently than your 50%. 1st they say gold grades 'up to 13kg's per tonne present in concentrate, then they say 2343 g/t repeat to 2573 g/t, then talk 13.36% & 11.68%, then 132 g/t ??
Next there 'is a challenge' to recover the gold from the concentrate.
I think we need a geologist to explain this in plain terms. Can anyone help here?
Also, concerned they make no mention of the 'free gold' they have captured in those first 2 weeks- this concentrate is in addition to this, as per the announcement 26 June.