Pavlovas,
What are you talking about? BHP & RIO are aggressively expanding IO, building Australian economy at competitive low cost. It is about mass production and super low cost base to keep IO price low for many years. If IO price maintains at $80/t for 10-20 yrs, BHP can still make healthy $50/t profit X 290 mtpa (by 2017) = $14 B profit and tax to government and state.