$6bn is a lot of interest to cover and a lot of debt to pay off when its costs $120/t to get the ore on a boat and you sell it for $80/t. If Oakajee made sense it would have been built 3 or 4 times over the past 30 years. All the moose pasture in the world wont make it so.
Anyway, all this is really old ground. PDY's only aim is survival and paying themselves wages until what... iron ore's up over $150/t again ?