Great Article on MOD, page-4

There is a lot of interesting detail in that article, particularly the comments from JH about the mineralisation model "there may be multiple thrusting events causing a repetition of the host sequence in several places".

Pre-scoping study they went into a bit more detail about the sheeted mineralisation style they had seen at T3, and that "the thickness throughout the deposit may represent multiple stacked mineralised horizons, stacked one upon the other.".  

This seems to explain why they blitzing the dome with soil sampling and inversion modelling - if they've got a decent covering of the host siltstone sequence across the dome and a thrust zone with multiple thrust events, you've got the best conditions for finding another T3 under this model.