Ann: Mt Cattlin independent review supports near term production, page-6

So $250m NPV using $450/t USD and $75/lb USD for spodumene and Ta respectively.

Given that they will be in production quite quickly, they will be able to take advantage of current prices which are $600 USD per tonne for spodumene and $170 per pound for tantalum.

Thats possibly a 30% increase in revenues which will all go straight to the bottom line. Actual NPV could end up a lot higher.