"Since installation of the Knelson Concentrators, the labour requirements in the gravity circuit (previously jigs) have decreased significantly. Moreover, the mass of material recovered by the Knelson is a fraction of that collected by the jigs. This has decreased the amount of time needed for tabling. Gravity circuit manpower requirements have decreased as a result of the Knelson Concentrator installation". - Brad Hewitt - Placer Dome Canada Ltd., Canada ...more > >