I believe Karara did actually achieve 68% -but cannot sustain that quality because of some production costs related issue.
They should still be receiving a premium for the grade they are currently producing - but for some reason it seems to be a very small premium considering that they were touting a 20% premium to the 63% Fe price.
This is where the black cloud is over Karara - the reporting to the retail investors is shocking - but hardly surprising given that the Chinese Government is now in control of the project. I believe serious questions should be asked.
Can't blame Trump for looking after his own backyard first - pity we don't have some similar pollies here