Ann: Quarterly Activities/Appendix 5B Cash Flow Report, page-30

I will break it down for you :-

500000 tonnes (ore) x 70g (silver content) = 35000000g silver * 0.8 (recovery) = 28000000g / 31.1 = 900321oz silver in that stockpile that they will end up with. That is currently valued at ~29.71M aud . Now this is conservative probably some of the stockpile is 75g/t and recovery will likely be a few points above 80, but we will go with it.

You can see I said "~30M AUD in revenue in 6-7 months and have $17.5M in costs" . So the costs are just based on the tonnage processed which is a known quantity, 500000 tonnes x $35 = 17.5M . Which leaves $12.5M in profit once the stockpile is finished. Excluding admin costs, whatever else you want to add.

The question is how long will the stockpile take to finish? Well their mill can handle 850000 tonnes per year (including downtime I believe), so this works out to 7 months. There have also been various improvements so their tonnage per year on SILVER could likely be higher now but we will have to wait and see. This is why I said "6-7 months". So the figures I gave on the stockpile are accurate given the information I know.

You seem to be using their current processing of gold and attempting to apply it to silver, it is better to just use their known silver milling capacity I think as it involves less guess work and it has produced at that level before I believe. HTH