The fall in SP from the recent high has been 28% (at $1.40) compared to SFR 21% OZL 18% and HGO 11% in the current retreat. The low copper price is being somewhat offset by the fall in the $Aus previously.
$US 2.51 for copper is still $3.10 $Aus, plus all the company's are benefiting from the low oil price.