If you look at the latest corporate presentation, it clearly shows that:

1) copper is 62% of the revenues at $3.25 US

2) gold is 24% of the revenues at $1445 US

232 000 0000 lbs x 3.25 = 754M in revenues for Copper

To have equivalent revenues from Gold:

754M / 201 000 ounces = $3,751 US

Even using Copper at $2.60 US, Gold would still need to be over $3,000 US to become the primary source of revenue.

MoneyK