No, they don't. but a quick sum or two using these figures give...

No, they don't. but a quick sum or two using these figures give s a ballpark estimate of margin:
"While major activities atKooIan Island were wound back, mine planning in December identified approximately 400,000 tonnes of accessible material grading 58-59% Fe in the Acacia East satellite pit on the northern side of the island. At current spot prices and exchange rates, the Company expects the mining and sale of this higher-silica material to generate a gross cash margin of approximately $5-10 million."
-so a margin of $12.50 to $25 per tonne. However, there is no indication of the market price range they expect to achieve.
Koolan... no-one can say with any assurance that they know or have a faint idea of the future of this pit, except that if low ore prices continue for a few years then its future as a mine is in doubt. Said by me with no assurance at all.