The Tschudi Copper Project is an open pit copper mine located about 20 km west of Tsumeb. The heap leach pad consists of 18 cells with an overall pad 1,100 m by 500 m in plan. The pad has a composite clay/HDPE liner overlain by a granular drainage layer incorporating a network of slotted drainage pipes. The solution ponds are double lined with HDPE incorporating a seepage interception layer over clay bedding. The stormwater and raw water ponds have a single HDPE liner. The pad is stacked in 4 m lifts for weathered oxide ore and 6 m lifts for unaltered ore to a final height of 36 m.
Knight Piésold conducted a heap leach bankable feasibility study, including geotechnical investigation and laboratory testing of both construction materials and leached ore. This was followed by detailed design and construction monitoring of the leap leach pad, drainage system and collection channels, PLS, ILS, stormwater, raffinate, SX event, and raw water ponds.