If I remember correctly Mr. Nemis stated they would be doing a 3D visualization.  UNO has one on their web page and it is worth a ton to see what is underground.   They also don't seem to be missing the body with their drills.

As I see it they can do a lot of drilling which will help determine the ore body size but by using the the most modern technology they can map what is underground before they have to drill all over the place.  I just watched a program where they had a visualization of the Sudbury nickel region with its numerous legs underground. 

I am not sure exactly how it is done but would not the outside holes be utilized to bounce downhole seismic/magnetic reading off the outside extensions of the mineralization. 

Also the neighbours are  doing high res fly over to better understand the magnetic anomolies that are similar to DE.  Remember there is a lot of interaction between FWR,SPQ,NOT and maybe others I am not aware of.  Now that they know there is a certain magnetic anomoly that is more capable of hitting the motherload they have been going over existing maps with a fine tooth comb.  The more hits the better chance of a mine being developed.