Keene Engineering has developed the perfect concentrator riffle so you can experience unsurpassed fine gold recovery with a sluice box. This is a professional clean up tool constructed of quality parts that are built to last. The Keene Super Concentrator is an enclosed recirculating system that employs two 5 gallon buckets to capture tailings and water and route the water back to a pickup bucket for reuse. This means the unit can be used both as a super concentrator for processing the material taken from large sluice boxes, or as a small self contained primary processor of screened material. For example, it can be employed as a recovery unit for working a dry gully in a desert, for getting better gold recovery than a drywasher while using minimal amounts of water.  The Keene Super Concentrator features the first Hungarian Riffle molded into a rubber mat, which Keene calls the Green Miracle Mat. The mat is installed into a portable concentrator sluice measuring 44 inches long by 8 inches wide with a built in flood-header box, plumbed with an adjustable flow valve to meter water flow and separate spray nozzle for clean up. Includes adjustable brackets, two 5 gallon buckets and a pump. The KSCR has been greatly redesigned with a newly designed flood header to provide better flow using a higher capacity 1250 GPH 12 volt pump. The sluice now features an 8 inch section of ribbed carpeting and zinc-plated expanded metal, offering more efficient processing of course materials and irregularly shaped gold. We have made the sluice into a two piece configuration ease of transport and compact stowing. Constructed entirely with materials made in the U.S.A, including the pump! Operates for 8 hours on a typical automobile battery, battery not included. Weight 27 lbs.