RE:RE:RE:Stockpiles??
Oil, Crunching numbers is not my forte. There are just too many factors. Looking at things simply, revenue from the mine will be about $80-100mn in the full year. GRG has 25% of that, but will also have to cover 25% of the developement costs. You can try put a bit more detail together from the following link:
https://hallgartenco.com/file.php?path=Mining&filename=GRG_May2017.pdf
Alex