*Pre-tax Internal Rate of Return of 58% and net pre-tax cashflow...

*Pre-tax Internal Rate of Return of 58% and net pre-tax cashflow of $576 million at commodity prices and exchange rates as of 14 December 2010.
Gold price of US$1403/oz; silver price of US$29.83/oz; copper price of US$4.18/lb; and exchange rate of A$:US$ 0.9954

With gold, copper and silver prices forecast to go much higher one can only see this excellent IRR being exceed by a substantial margin imo.

There conservative IRR gives a healthy IRR of 40%
Pre-tax Internal Rate of Return of 40% and net pre-tax free cashflow of approximately $400 million
at a gold price of US$1,100 per ounce, silver price of US$22.00 per ounce, copper price of
US$3.50 per pound and a A$:US$ exchange rate of 0.90