... gravity. It is widely used in selection of Tin, tungsten, gold, silver, lead, zinc, tantalum, niobium, iron, manganese, ferrotitanium and coal ... , which is used for selecting rare and valuable metals including gold, silver, lead, zinc, tantalum, niobium and tin.2. Performance of ... more like 20-30 times more efficient than a gold pan. In gold and mineral applications, a full sized gravity table, like ...