Nicely done, but in consideration of point 4:

#4 Probe actually drilled 11 holes on DE and turned the property back to Noront when nothing economic found. Another indication that finding economic mineralization isn't easy.

With the improved technology for measuring anomalies and and the new perspective on interpreting the results, the participating companies no doubt have a much greater expectation of increasing their success rate.  How much so is soon to be revealed.  It still won't be a walk in the park but they seem to be banking on its advantages.