Alan,
Perhaps a lot of the low grade ore will not make it to the Market, this is the start, the starting pistol has been fired.
How long to start mining if you have just proven up a resource. 1, 2, 3 Years. What will IO prices be then....
add to this with BHP & RIO putting in a few hurdles
As the OE and other reports states. Those with premium grade high tonnage will have the best chance. IMO only a handful...