From reading the report, it doesn't actually state their profit...

From reading the report, it doesn't actually state their profit margin (and the timing of sales and receipts etc makes this a little difficult to pin down), so does the following look reasonable?

Unit costs A$46/WMT (this is wet metric tonne?) page 1

Bauxite sale price US$50.4/DMT (dry metric tonne) page 9

taking exchange rate of US$0.71 the unit cost is therefore ~US$33/WMT

no sure what is the expected moisture content, but assuming 10-20% is reasonable

unit costs in terms of DMT range from US$36.3 (10% moisture) to US$39.6 (20% moisture)

so looking at a margin of US$14 to US$10.8 per DMT

which with rate of US$0.71 is a potential margin of  ~A$29 to A$15 per DMT 

Does this sound correct??