Well, I do understand 43-101 reports, and you picked out the one statement that sums it all up nicely. A vein system like they are describing is very hard to explore due to the narrowness of the mineralized zones, and the questionable continuity. It is very hard to "make" a mine out of that kind of mineralization - estimates of tonnage and grade are extremely unreliable without an extraordinary amount of exploration, with tightly spaced drillholes, etc. Very easy to get nice individual assays, but very difficult to put together a defensible, minable orebody.
In other words, great for promotions, not so great for actually mining.
