Abstract: Apparatus for continuous flow classification and specific gravity separation of relatively fine, heavy sands from gravel and dirt aggregate comprises an elongated channel having an apertured top plate which defines an upwardly facing flume and a cavity. The flume is adapted to have a flow of water bearing the aggregate introduced at its upstream end to flow over the top plate so that the relatively smaller, heavier material falls through the apertures into the cavity. An inclined table is positioned in the cavity below the top plate, the angle of inclination of the table being adjustable. The table has a trough defining side portions and terminating in a downstream extension for discharging tailings, the extension having an opening communicating with the sump portion of the cavity. An adjustable weir diverts flow of a selected heavier portion of the material from the trough into the cavity sump.

Abstract: A manure collection and storage system includes a collecting receptacle for receiving manure collected from an animal confining facility, and a water line for adding water to the manure in the collecting receptacle to form a slurry. A storage receptacle is located at a distance from the collecting receptacle and is connected thereto by a conduit. A first pump is coupled in the conduit for transferring slurry from the collecting receptacle to the storage receptacle. A second pump is coupled to the storage receptacle for recirculating the slurry therein thereby to agitate the same, the second pump being adapted to discharge slurry from the second receptacle.