... , gold, iron, manganese and other metals, ferrous metals, nonferrous metal Double ShakerFor tungsten, tin, tantalum and niobium, gold, iron, manganese and ... 80 slots, 90 slots, 110 slot, 120 slot, lifting of bed, etc. materials were glass, steel or wood shaker surface. The ... same bed with hyperbolic rocker mechanism, the spring box in the shaker ...