Mining plan21 Sep 2023 07:42
That last presentation gave a bit more colour to the mining plan, looks like the top 4-500m will be stoped. Due to the depth there will be plenty of time to sort out a future mining plan.
3 stope levels to be stoped at same time.
Well to me that was obviously needed as the ore body plan makes it difficult to open too many on one level especially with the end ones running through the crescent.
3mt will be tough to get without 3 levels.
Stopes approx 10 stopes per level
3 levels 30 stopes
From presentation stope size 20x30x50m = 90,000 ton
900,000 ton per level
2.7m ton for 3 levels
To get to the 3rd level which is about 250m from top of ore the Decline will need to go down another 1,760m. At 5.17m average per day is another 340 days.
Very difficult to get to 3mt pa without introducing stoping to the high grade pods in the Northern Corridor.
Increasing the tonnage from this stoping to me is not an option:-
1 - A hoist would need to go right down to the base of the crescent, you couldn’t take it down halfway and then extend it. Keeping the need for trucking higher up.
2 - a higher tonnage would introduce weaker grades ie higher costs less free cash flow