Figures based on pre feasability200,000 MTU concentrate * $225 a...

Figures based on pre feasability
200,000 MTU concentrate * $225 a MTU = $45Million

$45M/ 2.3Mtonne per annum mined = US$19.56 a tonne revenue = $A23.00

Costs: mining cost $3.13 plus processing cost $11.39 = $14.52 a tonne

Revenue $23.00 - costs $14.52 = $8.48 a tonne
$8.48 * 2.3Million tons MTU = $19.5Million pa in cash flow to pay depreciation and ammortisation of $110M over 12 years.

Big Hill seems marginal IMHO but welcome my figures to be refuted as I am not a professional and likely to have made a mistake.