RE: Very quiet on the board.I believe it was Chuck's proprietary methods that led to Canada's first economical diamond discovery in the NWT. (Ekati) You may remember that it was Chuck (and Stu Blusson?) that started the massive rush in the early 90's.
Perhaps someone more knowledgeable may have more detailed information on the various costs involved.
In any event, with my very limited knowledge, I believe that his method all boils down to the types of any indicator minerals that he finds and where they are located. Depending on the grouping of the indicators, this may point him off in a more specific location to follow any trail. Using auger drilling is a cheaper method to follow any trail compared to RC drilling.