Discharge of the product can be accomplished by several methods. The mixing trough can be tilted up and forward through the use of a hydraulic system. Valves can be located in the bottom of the unit, allowing the product to discharge through plug, ball, or "bomb bay" type valves. A third method, which has several advantages, is the use of an extrusion screw to discharge the product in a form or shape, or directly to the next phase of processing.