Am trying to gather further information on what I just found out about xstrata.Seems they have an agreement with noranda income fund.

The first is the Supply and Processing Agreement,

and the second is the subordination feature. Pursuant to the

Supply and Processing Agreement which expires in 2017,

Xstrata Canada is obliged to sell to the Processing Facility up to

550,000 tonnes of zinc concentrate annually.

Trying to figure out where all their zinc concentrate comes from.With perseverance's mine life ending in 2013 thats 2600 tons/day that will no longer be mined.Obviously this is the reason they needed to fast track the bracemac-mcleod deposit.