"no use if the AUD/USD is also rising!"
who said it was rising??
Morgan stanley says the AUD$1 will go to US$0.50
http://www.businessspectator.com.au/bs.nsf/Article/Aussie-dollar-may-fall-below-050---Morgan-Stanley-ME6BX?OpenDocument
that means if copper goes to US$1 we will get AUD$2