RE:RE:RE:RE:Chart $9-10 by end of 2023 - not sure where you get those numbers from. Let's make some assumption to arrive at a realistic valuation.
Assume they sell 2.4m tons with a net margin of $50 per ton (currently around $100)
that give us a forward P/ FCF of around 3.60. In mining a good C/FCF ratio is anything under 15x.
So provided the above assumption are correct, we are undervalued by around 4x. So 2023 SP should be $31.20 per share. That is without a growth multiple.
It gets real interesting if they make $100 per ton and more interesting if they do 3m tons. REAL fun when phase 3 expansion of 10m tons. Good luck and hold onto your shares:-)