And of course the costs of extraction and milling have to be...

And of course the costs of extraction and milling have to be accounted for. Say at a guess,profit margin is in the region of 20%-you're looking at just under 134million dollars on whats been estimated.Much of the mining can be open cut operation. I believe pit mining at lower levels is economical due to better grades.So the totals could come in at higher figures.Plus there are further areas in known gold country to be explored. But I'm just a layperson and not completely au fait with mining jargon and terms. If you check out Roblun's posts on GSR, he has done extensive research on GSR's potential,revealing,to my mind what could be termed criminal negligence in not monetizing GSR's gold reserves.

db