If you'd done your DD the reason they are quoting 660,000 tons in the PEA is because its suitable for open pit, so it's very relevant to the discussions as people are using the larger resource figure to make an argument for higher IRR and larger NPV.
I am long ZEN and although I was hoping for more from the PEA as PREVIOUSLY STATED am happy with it but some people need a strong dose of reality, I'm an investor and not married to this stock.
Oh and God willing I hope to be very much alive in 22 years time although there is a strong case for ZEN to mine and sell far more than 30,000 tons/annum and dramatically reduce that timeline. Forgive the question but have you done any DD on the PEA or just read it and accepted it?