Interesting that in Nov 2007 BHP were referring to Stage 1 as "250ktpa slag" for Corridor Sands/Mozal, assuming that a slag furnace would be used. Nov 2008??
Any thoughts on the graph of upgrade capital cost history on p.10 of the BHP presentation? What does the y-axis refer to? $ per tpa? Or amortised capital cost per tonne. If it is the former, it seems remarkably cheap to upgrade plants.