It is a shame that no eye popping hit was made but that's the problem with poking a finger in various spots. They could miss a rich vein by 8" and not know.
Looks like they are getting a good geological handle on the overall deposit and just maybe getting to the size where a larger firm might make an offer and go for strip mining and production. Maybe right now the big guys are conserving cash but sooner or later somebody should sit down and deal.
Guess right now there is no reason to sell and unfortunately not much reason to buy. Going to be a longer hold investment but potential payoff down the road doesn't look bad.