From Yahoo:
BHP Billiton does not expect recent rises in iron ore and coal prices to hold for more than a few months, as the uptick in prices would bring more supply to the market, its Australian chief said on Thursday.
“I wish I could stand here and say this is going to be sustainable. I don’t think it is going to be,” BHP Billiton Minerals Australia president Mike Henry told the Melbourne Mining Club.
So then what should one do with a twelve month time frame…

