Ann: Further Results extend Barlee Mineralised Pr, page-46

re: Ann: Further Results extend Barlee Minera... First of all IGNORE HALLEYS WEST ESTIMATE.
After reading through the report last night I realised that BRC143 & 144 were to the west & blanks.
BRC150-152 have been drilled angular but it appears they have started from within the JORCed zone of Halleys East & not knowing where they terminate, they might well be right at BRC134 or 135. So essentially the three drill (BRC150-152) hits could be comletely duplicate hits for all we know. Also no idea where BRC116 is gone to. I'm just rather disorientated by the whole area we have now way of vaguely determining the 3d shape or size of the hit from the data issued.
I still regard H West as a pod of minimum 20-25k oz
I am very pleased with yesterdays RAB result and will explain why in a short while on Pokerfaces thread.

Boiler, glad to have brightened your day.
Sting, fully agree, just wanted to make some extra money, I'm in this for the long haul.

BROMAC the calculation I'm using is:

1) L/W/D from the drill report (depth being lenght of strike) L & W assumed 20m in all directions to next hole, area is split between holes where adjacent known.

example on tho holes side by side 20m each end 20m between in 60m long (30 each) x width 20m each side is 40m so both holes deemed 40x30

2) L x W x D x Density = tonnage
note density estimate is just the low end of range from JORC 1
g/t (grams per tonne on that hole)

oz = G/t x tonnage x 31.1034768 (conversion of grams to troy oz) this assumes the grade is uniform.

The g/t figure on the end is taken by the average of the hit (call it C for Centre) & the surrounding holes
so N-C-S gives average noth south & E-C-W gives average East West, the average of these two gives the G/t on the second last cloumn & multiplied by the tonnage gives the oz on the last column.
Note: where there is no neighbouring hole, the g/t is deemed to drop to 0 at a distance of 20m from the centre.


3)ID is adjcent hole ID. NSEW directions are largely irrelivant once you recognice the four surrounding wells, from the Collar Location Maps, which accompany many of the drill results.

4) explained in last part of answer 2

5) the question you forgot to ask, adjacent hole grade is calculated by the average tonnage between holes at the average depth between holes. The result is then equalised to the depth of that particular hole.

example: BRC135 (14m at 45g/t)to BRC116 (12m at 11g/t) average depth is 13m average g/t is 28.275. For BRC135 that equates to 28.275/14*13 & For BRC116 28.275/12*13.
This way I am dealing with a solid cubic shape, easier to work out tonnage than an uneven shape, the grade is altered to compensate.


ITS ALL RATHER COMPLEX BUT STILL QUITE CRUDE.