RE:RE:RE:RE:PLS and the Pumptards
BobbiOre wrote:
Arrow vs. PLS
Which is higher grade? (Both have high grade cores)
Arrow's overall grades should come in at least 2x richer than that of Triple R. By my estimation, global grades are currently around 3.9%.
I think some are underestimating the tonnage we will get from the extremely high grades in the subcore.
Triple R has 45M lbs @ 18.22%, so let's narrow the scope of the following exercise to just those intercepts at Arrow that have returned greater than 18.22%.
* Hole 49c2 returned 18m of 20.55%;
* Hole 44b returned 20m of 20.68%;
* Hole 62 returned two discrete intervals of 23m @ 20.37% and 13.50m of 20.59%.
(The two intervals in Hole 62 were separated by <2m, resolved for true width)
The continuity over the 63m strike between Hole 49c2 and Hole 62 is immediately obvious. Given recent infill results (i.e. Hole 64c2), there's no reason to think that we can't expand the ultra rich core. If Hole 62 is any indication, the ultra rich core (~20.5% U308) should measure 63m in strike, 11m in width and 45m depth.
63m strike * 11m true width * 45m depth * 3.55 t/m^3 = 110,707 tonnes
110,707 t * 2204.62 lbs/t * 20.5% U308 = 50M lbs U308.
Triple R Ultra H/G Core = 45M lbs @ 18.22% U308
Arrow Ultra H/G Core = 50M lbs @ 20.5% U308
But here's the rub, while Arrow's Ultra H/G Core will be easy to mine even at 400m below surface. Triple R's best ore will be sterilized within the 50m crown pillar required for underground mining. Triple R's richest ore is too deep to be open-pittable, yet too shallow (and too close to water-charged glacial till) to be amenable to underground mining... imagine the irony!