MOL's hedging only cover small tones and I think only to Sept this year. IO price can stay low for many years to come.
RIO's Sam Walsh says "keep below US$50/t".
Look at CAP's presentation slide:
Cash cost (exclude debt payments etc.): RIO $31/t; BHP: $38; FMG: $52; AGO $70 etc. That is FOB (Freight On Board)cash cost