We don't know what DMN and ORO have here. Sure, there are positive signs - which is why the price is at 0.003, instead of 0.001 (which is where it was languishing for a considerable time last year) - but nothing certain.
People are taking up positions in the hope that the positive signs in the gravity survey are borne out with a rich vein of minerals that can be tapped relatively cheaply. But it's a bit like bidding on a second hand car at auction - you'll happily go up to scrap value, maybe a bit more, because you know you can get most of your money back; but to go beyond scrap value, you need to know that the car's going to run reasonably well, that it won't be a maintenance nightmare, and that there aren't any structural flaws. In the same way, the share price for DMN in particular won't move significantly until the potential asset is checked out thoroughly, valued, and moves are made to exploit it.
This isn't a "buy for a quick profit" share. It's a "buy in the hopes that something good will come out in four to six months". I'm holding onto my shares until we know what's come out of the drill holes, and possibly even beyond then if what comes out looks good. If it dips back to 0.002 before then, I'll probably splurge on a bit more (although I doubt it'll happen.)
Too long? Didn't read? Short version: all the speculative gains have been tapped out; the speculators are waiting for something more solid before raising their offered price.
DMN Price at posting:
0.3¢ Sentiment: LT Buy Disclosure: Held