RE: question mm15and I guess I should say any one interested in Rhonda.
Bashers and halcrow bashers need not read on.
This is a earlier post from farky.
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SUBJECT: Incredibly interesting read.... Posted By: farky
Post Time: 1/27/04 22:59
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I found this in Debeers Canada's water application for the Knife project this year. I would recommend you read the whole article.
Just do a google search to find the article.
Drill Programme 2004 – Crown Land
In spring 2004 (approx. 01 March to 01 May), a 25-hole drill programme producing the equivalent
of PQ-diameter (10-11cm) diameter core is planned at Knife Lake; the objective is to recover up to
100t of kimberlite from the Knife Lake kimberlite pipe. Two drills, such as Boart Longyear’s LF-70
hydraulic core rig (the same model as used for several programmes on DBCE’s Rockinghorse
property, cf. Appendix 2A) would be deployed concurrently; at 9 000kg, this is a lightweight fly rig.
There also is the possibility of use of Boart Longyear’s larger (17 300kg) gear-driven LY-50 core
drill modified for fly operation (Appendix 2B). The proposed campsite is approximately 2.3km away
from the drillsite area, within easy reach by fixed-wing or helicopter. Kimberlite core recovered
would be flown off-site by fixed-wing aircraft.
Drill Programme 2005 – Crown Land
Should results from the 2004 programme indicate that further (i.e., larger-volume) evaluation of the
Knife Lake kimberlite is warranted – to gain additional information on diamond grade and stone
distribution – DBCE might consider a combination of large-diameter drilling (with either a
production rig alone to do both casing and sample recovery, or with both a large-diameter casing
rig and a production rig) and mechanical land-based trenching. Trenching would be considered
where the Knife Lake kimberlite pipe subcrops to land. Drilling methodology similar to that used at
DBCE’s Kennady Lake (Gahcho Kué) Project, NWT, in 2001-2002 would be employed, i.e.,
reverse-circulation air-assist production drilling which lowers the incidence of stone breakage
typically encountered with reverse-circulation (water) alone. Neither the location of large-diameter
holes (LDDH) nor length/orientation of trenches can be determined at this time.
It should be noted that plans beyond 2004 are necessarily highly speculative and subject to
change, depending on results and year-to-year budgets; whilst a programme may prove
successful, there is also the possibility that a programme may prove unsuccessful, which is a
disincentive to further work. INAC, other Regulators and Kitikmeot residents, principally of
Kugluktuk, shall be kept fully apprised as plans evolve.
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