These operate on the same principal as a manual rocker but have a power drive to provide the motion, which may be a rocking or shaking motion. Tim’s Gold Extractor is an example of this type. In addition, this particular machine also has a hose attachment to provide water from an external source located above the machine and fed via hose using simple head pressure. This makes it much more efficient than the manual type. This machine belongs to the club and is usually used at the outings for the common dig.
