RE: Troajan6 Jan 2021 08:10
I agree with some of your assessment, but not all. Trucking capacity doesn't appear to be an issue, with hauled material hitting 1850tpd, however 600tpd of that is waste - as stoping moves more from room and pillar to open stoping, I would be looking to divert that waste to stopped out areas, which will reduce waste trucking time and costs - its considerably cheaper to truck on the level than on tge main ramp. The high volume of waste being trucked points towards the most serious structural problem in the mine - lack of developed ore, which is why a contractor has been brought in to push development further in advance of mining.
Secondly there is no hoisting at present, however there is a shaft available, which will require fitting out and an underground crusher installing. As the mine moves deeper, this must be brought into operation. A big benefit of this on top of a large reduction in haul costs, is it will massively reduce the ventilation demand.
Thirdly, tge mine is actually a pretty dry mine, with more water being pumped out that has been introduced as part of the mining process (drilling and wash down) than what enters tge mine naturally.
The 20% SGA cost us largely a fixed cost, so as tonnage improve as a %age that will reduce. Bringing a mill on site will remove the 10% transport to mill cost. The processing plant seems pretty efficient, but capacity is a limiting factor.