GRADE CONTROL BLENDING AND SELECTIVITY FOR OPTIMAL
4% Zn) ore stockpiles. Limestone (Ca gt;28%) from the pit is mined for plant acid neutralisation purposes. Material with Zn lt;1% is designated for the waste stockpile. Spotting and recording of ore types and tracking of tonnages and grades, according to mining perimeters and loading plans, is undertaken inpit by a dedicated team of geology