Iron ore price, page-2251

A thought bubble... The current $29 / tonne difference between Brazil's 65% and FMG's 58% IO equates to ~$5b p.a. less revenue for FMG's ore. This is massive! If the sale price difference stays this way, as RIO claims, FMG should consider ramping up production to 200m tpa, build a downstream refining stage at a capital outlay of, say, a few billion, which is capable of generating a nett ~170-180m tpa IO at 65% grade. Despite the additional annual processing steps and initial capital outlay, FMG could probably still add at least $10 per tonne to their selling price, i.e at least ~ $2b p.a. profit, or about > $6 per share. I can only assume that this is not being considered by FMG as it is not so straightforward to concentrate the ore from 58 to 65%? Where else am I going wrong? Technically impossible?