Jiama Copper-Polymetallic Project - NPV and IRR Summary Long Term Metal Price NPV ($ Million) IRR Cu ($/lb)Mo ($/lb)Au ($/oz)Ag ($/oz) @0% @7% @9%Base Case @11% $2.90 $18 $1,380 $16.50 Pre-Tax $4,480$1,820$1,470 $1,20460.4% After-Tax$3,841$1,542$1,239 $1,01053.7%