The Powerscreen Trident dewaterer is a mobile screw recovery, twin bucket wheel designed unit for the removal of clays, silts and slimes to produce up to 2 grades of sand. The Trident range is designed to operate with maximum versatility and can support different requirements such as maximum retention of fines or maximum disposal of fines. Powerscreen Tridents can be driven hydraulically from a Commander 1400, MKII, Chieftain or from its own optional electric power pack.