It is my understanding that any preliminary economic models...

It is my understanding that any preliminary economic models cannot be released to the market - they are used by the board to decide if they want to advance the project. The ASX is extremely strict with releasing economics, the minimum a company can release is a full scoping study. To get to a scoping study they need an MRE with enough tonnes for scoping study in indicated (approx. a 50:50 indicated to inferred ratio is typically accepted by the ASX). So they will need to get cracking with drilling to get there, but given the grade consistency and the way resource modelling works (geostatistics) they can probably get to indicated with wide spaced drill holes so it isn't a huge undertaking.

I would be very interested to see a timeline for Phase 2 met work, Phase 2 drilling, scoping study.