Types of Placer Wash Plants | West Coast Placer
There are four types of centrifugal processors on the market today: the Knudsen Concentrator, Falcon Concentrator, Knelson Concentrator, and the Gold Kacha. The Knudsen was the first centrifugal concentrator used in placer mining. It was invented by George Knudsen of California and patented in 1942.