More Caveats minus One, page-12

Looking back at the valuation it seems they said in-situ value of $1 to$4/tonne, with a prefered value of $382 million. So it was not even scoping study (+/-50%) type of "valuation". So its not an NPV valuation based on anything, just the prevailing market conditions at the time. There is absolutely no way you would apply a "certification" to this figure.

I bet they couldn't get an offer for a hundreth of that currently.