the short-sightedness of this deal, page-34

Reall Westcott ...... And pray tell me about the now mysteriously missing fourth cost quartile? All rather than admit you were wrong mind you.

Also I note I said "relatively expensive" not "expensive" - which doesn't justify you muddling basic maths, or now your desperate back-peddle to try to explain yourself.

From the African Down Under Presentation,page 13 that I have often referred you to, here is the itabirite as 3rd cost quartile:

And as for your attempt to re-calibrate a range, as a point estimate, then to jump over that point: