Thank you for the link shows an average intersection of 3.9...

Thank you for the link shows an average intersection of 3.9 metres.
Would agree to use the 3.9 section width if the lode was horizontal as in a sill structure and there was vertical drilling.
however this is a dyke structure (vertical lode with a high aspect ratio) with the drill not intercepting perpindicular to the ore body but at an acute angle to the orebody.
THerefore the drill intercepts of 3.9 average are going to be far wider than the actual width of the ore body.

Also in that rough guesstimate I assumed a contiguous strike length of ore body its not likely to be its sure to swell and shrink along strike and may even disappear in places.

Also as a rough guide measured reserves are only half of what the resource size comes in at.

Even If the ore is free milling most of the upstream equipment is still needed crushers and ball mill and a inline pressure jig, the cost of the CIL tanks would guessing only add 20% to the plant costs as with an IPG placed prior to the tanks the loading on the tanks would be reduced so residancy time would also be reduced, so reducing the volume needed with agitation tanks.

I really cant see the grade coming anywhere near 6 grams a ton.
Just my thoughts and a total amateur so probably wrong.