"I think the annual production average over 10 years may be between 175kOz and 200kOz. Over time with ew discoveries those production figures may increase."
SO the plant is rated at 2.5 Mtpa
lets say harder ore means it runs at 2.3 Mtpa (being conservative assuming there are issues commissioning a secondary regrind circuit)
A plant running at 2.3 Mtpa at 1 gram a tonne ore recovery would result in :
2,300,000 * (1/31) = 74k oz
So at 3 grams a tonne recovered it would give 3 times as many ounces ie 223K ounces
So based on your figures they would have to be running the plant at reduced capacity or at less than 3 grams a tonne recovered to get 200K oz per annum .
Would be nice to run the plant at 6 grams a tonne recovered (leaving out 4P and WW) and get (74 * 6 ) = 444K oz per annum you sure that is not what is the hidden aspiration given SLs recent comment all production will be coming from underground ?
Regarding ore reserve , given the intercept widths and corresponding stope widths , which will in itself reduce ounce per tonne variance , and no imperative need to get a reserve signed off by a lender , I do not see a need for putting it all into reserve , maybe 20% only , just my opinion , better to spend the exploration money in proving up inferred and indicated resource .
)At around 1.20 in today’s Australian Gold Conference Presentation says costs at present are coming in at $16.50 an ounce (??) ")
My guess is that is the cost to find an ounce of gold by drilling , not anything to do with the mining cost per oz
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