question re valuation of atc stage 1

Hoping for some assistance from some more educated holders re Stage One of the ATC Project - as stated by the company there has been an upward move in both the price of tungsten concentrate (input) and ferrotungsten (output). I am struggling to get a handle on the implication of these price movements to the cash flows and valuation of Stage 1 (although obvoiusly this would be helpful to Stage 2 incorporating Big Hill feed).

Is anyone able to clarify?

Thanks in anticipation