RE:RE:RE:RE:RE:RE:RE:ZenKnats excited about their Valuable Graphene after annual the_Chief wrote: ThinkPlease wrote: And you still didn't answer the question. Why is that?
Going back to the shareholder post about the meeting, the only mention of the method to be used for bulk sample recovery is drilling. Let's go with that.
The largest standard core size is PQ. The length of PQ core that contains one cubic metre of rock is 17.6 metres. Assuming 2.7 for the density, then 17.6/2.7 = 6.53 m PQ core per tonne of material. To obtain 990 tonnes in this way would require 6462 metres of drilling. (all numbers rounded for presentation)
In this calculation, I have totally ignored getting through overburden, but you pay for that too. PQ drilling is more expensive per metre and slower than drilling NQ or even HQ. Winter road access? Eek.
Pick a cost per metre for drilling, whatever, we're into the seven figure costs right there.
Then you have to haul it, find a custom operator to crush it and float it to concentrate, purify it, turn it into graphene....
I look forward to seeing their thoughts on this bulk sample program.
Not sure I agree, check my math
PQ is 4.8 inch external diameter, inside or core diameter is 3.34 inches. If one were to stand 1 meter core lengths up alongside the walls of a 1meter cube you would have 12 cores x 12 cores (12x3.34= ~1m ) disregarding the space between circular cores.
12x12=144 cores 1 meter long to fill a cubic meter or 2.7 tonnes. That means 144 meters of core needed for 2.7 tonnes.
900/2.7=333 holes 144 meters long
So whose math is incorrect? Could be mine...but don't think so? Comment?
We both had errors actually. I made a decimal error in my very first calculation. Instead of 17.6 metres of PQ core to have a cubic metre of rock, it takes 176 m of core. So you'd need to drill 64,620 m of PQ core to pull 990 tonnes to surface.
Your estimate credits the void space in your cubic metre model with mass that actually isn't present. That puts your total metre of core about 1/3 less than it ought to be. We therefore come up with virtually the same corrected results. And the costs of the drilling alone would definitely lie somewhere into the 8 figures, i.e. greater than $10,000,000.