Nah man, read this bit again: The general position of the...

Nah man, read this bit again:

The general position of the steeply-dipping Nagambie Thrust, thought to be the principal mineralised-fluids pathway at the Nagambie Mine, was indicated by the regional aeromagnetic survey. However, its position was not known accurately when the NAD001 hole was designed because the thrust is north of the West Pit on the NAD001 section and is covered at surface by 8m of alluvial clay. It had been thought that the hole would intersect the Nagambie Thrust at a shallower, more northerly position. The fact that the Nagambie Thrust was more to the south than thought meant that the prime area of interest within the IP chargeability
high would logically be more to the south.

They had a general target before. Now they know more about the thrust location more to the south they have more precise location of interest.

They didn't know until assays were in and all the additional analysis and mapping was conducted.

Drilling to holes at Cahill might yield awesome results, they might not but they'll certainly tell them a lot more of what's down there and if and where to look further.

They actually want to do NAD002 because it looks like a good target.

Look at P3 Orion submarine hunters on exercises. Even when they know a sub is in the area they rarely find it on the first drop of a sonar buoy. But add many sonar buoys and the sonar pictures from the frigates etc and they'll find the sub!!!