thanks Mooroo
"Multiply by $600/oz (NPAT) = $71 mil NPAT"
Have a look at page 23 of the last financial statement:
http://www.asx.com.au/asxpdf/20120301/pdf/424rj6c14cpw1r.pdf
Have you accounted for extras on top of basic production cost such as D&A, admin, royalties and tax? They seem to be capitalising their exploration expenditures instead of expensing them (page 29).