Sorry I made a mistake I’ll work it out again bit simpler this time in USD
Scoping study says there is
27000 tons of cobalt over life of mine and 35000 ton of nickel
27,000 x $59,000 = $1.59 bln
35000 x $10500 = $367 mil
= $1.95 bln
Minus $159 mil (capex )
=$ 174 bln
Minus $1 bln ( production cost USD)
= $740 mil
Divide by 21 = $35mil per year USD
= AUD $46 mil per year