Don't under estimate Holes 3 and 4...
Hole 3 is drilling in what I understand as a very favourable rock type for gold mineralisation (better than Hole 1 and 2), and Hole 4 is basically a much better targeted version of Holes 1 and 2, and so has a much higher probability of a "hit".
MNC are improving their understanding of Chuscal geology so each new drill hole has a higher probability of success.
