The tailings are then stored in a tailings impoundment (Cuevas, Jansson et al.). Once the required density is obtained in the sump and screening has prevented large objects from passing, the slurry is then pumped to thickeners and the underflow is reprocessed in the plant. Tailings dams are generally segregated by the coarseness of the material (coarse fraction near the spigot) and if a particular area of a dam is too coarse for pumping then blending is required. The monitor uses high pressure water to erode the tailings in sections, washing the material downstream which is collected in a sump. The technology has been used on soft rock applications and on old tailings dams to either move or reprocess the stored material. ![]() ![]() Hydraulic mining monitors used today were first developed back in the early sixties by English China Clays, Cornwall, England. Figure 1: Kaltails Project, Kalgoorlie, Western Australia (Courtesy of Newmont)
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