Nice post Argoz and may I add that this mill is probably capable of much higher production than 500 tpd even if that is what has been announced, a good strategy in my view plus can be easily upgraded. I also note that they will use it to process (by blending I assume) the gold/pyrite con and maybe even the tailings into precipitate and then maybe even their own dore and you are correct either of the above outcomes can likely be sent directly to a refinery. This would increase the profit substantially from your estimates and have no mining costs associated with the concentrate or tails processed.