It's not only about the recoveries.  If the metallurgical work provides enough evidence for the mill to operate at 95% vs. 92%, that would make a huge difference!  Combine this with higher recoveries and possibly higher grades...

Napking calculation for the First 5 Full years:

Current status (conservative):

• 133 000tpd x 365 days x 2200 (to convert in pounds) x 0.288% (copper) x 83.1% (recoveries) = 256Mlbs copper per year

Possible future status (less conservative):

• 137 000 tpd x 365 days x 2200 x 0.32% x 88% (recoveries) = 310Mlbs copper per year

The truth could be somewhere in the middle, but that could represent 54Mlbs of almost free additional copper per year... and that's only for the copper!

54Mlbs x 3.25$ = an additional $175M US per year with minimal cost.

IMO.

MoneyK