GREY:PGDIF - Post by User
Post by
ekimon Jun 22, 2016 5:30pm
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Post# 24988876
Core drilling for 2017
Core drilling for 20171 - Pierce point and geotechnical drilling at CH-6 (1,500m HQ) and CH-7 (1,200m HQ);
2 - drill for caustic samples from CH-6 (1,200m NQ) and CH-7 (1,000m NQ).
Not too much detail here...but if you look at the depth of the TFFE.
For CH6, inferred goes down to 260 metres at depth and the TFFE goes down to 380 metres.
I have been told that the geotechnical drilling can be doubled up and use to get some deep intersections. That is what the pierce point aspect of #1 is. They will drill through the country rock to get the waste rock geotech data for the open pit and at the same time angle it slightly toward the kimberlite pipe and at depth, it will intersect the boundary of the pipe.
Not sure how deep they would target...but I suspect the 380 metre depth level would be a reasonable target.
With 1500 metres of drilling...and the holes would be slightly angled...and you put 4 holes in to depth....that hits a depth of 375 metres per hole. 4 holes available at each side of the pipe makes a lot of sense.
Now you have #2 - 1200 metres of direct drilling into the pipe. If these are deep holes. Drill 3 x holes and you get down to 400 metres.
If they can get down to 380 to 400 metres...this will be bringing in an underground portion for the next study. I can't see them doing a big open pit down to 400 metres as the strip ratio would go insane based on the footprint of the ore body.
TFFE goes down to 320 metres for CH-7...so the same math could occur although I think they still have some boundaries in the north half of the pipe to figure out.
The north half of ch-7 contains 39% of the domains versus the south half that contains 61% and is Domain 2. I would almost think about defining the value of Domain 2 in detail and then just averaging the 39% in the north half and treat it as one entity knowing the variability of it is going to be quite significant. I don't think it makes sense to try and isolate and firm up Domain 1,3,4,5,r,s. Does it?
LONG...PGD
EKIM