difference between the truth and whole truth, page-49

DT some questions for you, you make the below comment in your first post to this thread.

“There have been great Grade Thicknesses encountered, but also a lot of misses”

Do you have reason to believe the no. of holes which do not encounter mineralization is significant for this type of roll front geology ?

An extract from an article (below, I have used this article to help gain my understanding of the general geology in the area) uses an analogy of lily pads on a pond to paint a picture of roll fronts in a geological area.

I would expect the strike rate of the drill holes would have to be at least considered consistent with the type of geology at the project? unless there are other factors you know of or comparisons you have used which qualify the comment “alot of misses” ?


THE ROLL FRONT IS YOUR FRIEND
In the first article, we interviewed Charles Don Show, who helped pioneer ISL uranium mining as an economic means to extract lower grade ore from underground mining operations. In Snows 1978 article entitled, Gas Hills Uranium District, Wyoming A Review of History and Production, published in the Wyoming Geological Association Guidebook, he wrote about the development of the roll front theory. He wrote about discussions the project geologists were having in the summer of 1955 about Utah Construction Companys recently acquired option on the Lucky Mc uranium properties in Wyomings Gas Hill District:
Offset drilling Project 4 intersected one major mineralized zone with a grade thickness product over 10 percent U3O8. An offset of this and one other mineralized hole about 2500 feet away were barren. Many discussions of why the ore was in these isolated pods were carried on late into the night It was during the period of development of the reserves that members of the staff started referring to different layers and separated pods as areas of mineralization where chemical changes had caused deposition and soon the word chemical front was in common usage.
Three years later, Paul A. Riddell prepared a report to document the ore occurrences at the Lucky Mc mine. He was among the first to use terminology that has since become an integral part of the Roll Front concept. In his project report, Riddell wrote:
In conclusion, the uranium appears to be restricted to more porous beds, but is not evenly distributed within these beds. The boundaries between ore and lean material are erratic sometimes sharp and sometimes gradational. They do not appear to be related to changes in sedimentation within the beds. Others have suggested that the boundaries represent chemical fronts, and this theory appears reasonable in light of present information.
Originally called chemical fronts, these pods contained various grades of uranium. Each pod or roll front is comprised of different mineralization. Understanding that mineralization and how to extract the uranium alone determines how viable a deposit might be.
If you imagine roll fronts in a uranium area as if they were lily pods in a pond, you are off to a good start. When a company announces it has uranium mineralization on its property, this could mean it has many pods, or fronts. Ideally, you hope to have multiple fronts available on your ground. Typically, the meat of the front (multiple percent of uranium) is only a few feet to ten feet wide at the most, Strathmore Minerals president David Miller explained. This is the part that your ISL wells have to address correctly. If you look at all the mineralization in a single front system, above 0.03 percent, then from the tails to the front could be 100 feet or more. If you look at the multiple fronts in stacked sands, and you look at one end of the system to the other, the width can be several miles. The length of any of these can be tens of miles, but the good stuff comes and goes.
Miller compared these multiple fronts to pearls on a string. There may be one, two or three roll fronts in one well field. There may be more than three roll fronts, Miller added. There may be that many or more even in one pattern. Again, they are pods and they may be stacked in layers, like lasagna. The number of roll fronts in a pattern does not really matter, except for operational reasons, Miller explained. It is more complex to properly address multiple roll fronts than a single roll front, and you may not be able to optimize recovery of all of them.