Mining will be conducted using conventional open pit methods (drill-blast-load-haul), by third-party contractor. The mine plan adopted a dilution of 3% for Campbell Pit, with 100% mining recovery, and for GAN and NAN Deposits, 5% dilution with 95% mining recovery.
The waste dump formation for Campbell Pit will follow the ascending methodology and include drainage bases and channels for dump stability. For GAN and NAN, the waste dumps site shall be adequately prepared to include drainage at its base and channels to direct the flow of water with the aim of aiding geotechnical stability and mitigating the erosion of the stockpiled material.
The waste disposition operation uses the ascending method, beginning during the construction of the heap at the base of the area. Waste rock will be disposed of by truck and then uniformly distributed and leveled by an operator using a tractor. This process is then repeated, stacking another bank above the original one, while maintaining a ramp for the trucks to access the area.
Based on the results of the kinematic analyses, adjustments should be made to the slopes currently used in the mine, mainly in the more altered upper portions and in the portion below, where the massif is more relaxed. In all sectors, the stability of the slopes is controlled by the structures and not by the strength of the matrix, as occurs in heavily altered materials. Breakdown mechanisms are controlled by discontinuities. For GAN a ........
