Joel i agree about BHP/RIO trying to lock the gate, FMG is the most logical if this happens, UMC has the problem of being 100+ km from FMG if RIO and BHP delay for 2 or 3 years.
BRM benification will lower impurties to an acceptable level for a marketable product, the process is still in the fine tuning stage to optimise the method, still a way to go but im confident