Ann: Dobsina Exploration Update, page-123

Yep agreed @vintage but not knowing what was drilled, how it was drilled, sampled, analysed we can only assume that all things being equal the economic cut-offs, processing techniques and commodity prices have changed since then and there could well be mineralisation that previously was uneconomic remaining.
Either way still too early to tell which is why I've been sitting on the sidelines with this project till "the MC comes back to current NPV or additional information confirms current MC".
(All IMHO - DYOR) - GLTAH!