Joel you just prooved you know jack all, RIO do have a magnetite operation in canada. So there goes your brilliant well thought out theory.
And GBG's (magnetite) stripping ratio is less than MMX(haemetite)
heres a post from riddick
MMX strip ratio = 5:1 GBG strip ratio = 0.5:1
so before you post nonsence make sure you do your research. Im glad i didnt listen to you and bought GBG a couple days ago at 83c, now look at them mwahahahaha