this place needs a good iindustrial chemist, page-7

who is brendon, craig and David?
WHat is the mass recovery at Wiluna after flotation?

WOuld have thought there was some gravity gold seperated out if they ground fine enough, but am not a metallurgist like juk, so probably wrong, is the gold held by covalent bonds or something stronger with the sulphide ore? Guessing though if they ground it that fine it would mean the gold would still go out with the tails with a Knelson
all just conjecture on my part.
Am interested in this as NST is looking to use BIOX which I am a shareholder in, and dont want them having a similar disasterous experience as has happened here.