From a mining/DFS proposition they'll need to make a decision on...

From a mining/DFS proposition they'll need to make a decision on when to call it quits with the resource holes.

I think its great to have a few deep teaser holes outside of the resource envelops especially if your drill targeting allows, as it seems to be now with the directional drilling.

Judging by the visible gold being pulled up from the M1 deposit at depth the potential could remain at km depths meaning the potential minable resource at M1 could quite easily be 4 or more times its current size. You're just not going to prove that with surface drilling at this stage unless you want to spend all your money drilling these deep diamond holes. Esh