Thks, Topwon. I did mess up the currency conversion.
ZAR to US$ ~ 0.13, So Capex is $1.0 B
If Homebrand NPV estimate were correct, I still can not see any return by Xstrata for its Capex
NPV from Homebrand
+++++++++++++++++++++++++
5% $1,888,372
7% $1,392,152
8% $1,211,634
10% $939,551
12% $748,367
15% $553,904
20% $363,201
25% $255,119