I performed some quick calculations for 2009 revenue using...

I performed some quick calculations for 2009 revenue using September quarterly figures, current spot prices and 2009 estimates. Figures are in $AUD.

Century = $908m (35%)
Prominent Hill = $594m (23%)
Sepon = $398m (15%)
Golden Grove = $368m (14%)
Rosebery = $259m (10%)
----------------------------
Total = $2,529B

So even at current spot prices, the Century mine still creates about 35% of OZL revenue. That's too important to shut down, especially if it can be run at a marginal profit/loss.

Interestingly, with copper prices declining signifcantly since mid-year, we are still a majority zinc producer.

Zinc = $1,086B (43%)
Copper = $933m (37%)
Gold = $294m (12%)
Lead = $129m (5%)
Silver = $85m (3%)

I have included gold, lead and silver as part of the revenue stream, even though they are considered credits in some cases.