Mineral sand tailings are high in clay and resist efforts to dewater. The low angle of repose is also a contributing and complicating factor. When applied to closing fine mineral sand tailings dam AMC operations can deliver:
A trafficable surface within 16 weeks plus a maturation period (that varys from site to site and usually several months). Once complete the capping process can commence; and
A final fine mineral sand tailings strength at depth >10 kPa after the maturation period.