Conveyors are used when material is to be moved frequently between specific points, to move materials over a fixed path, when there is a sufficient flow volume to justify the fixed conveyor investment. Slat conveyor uses discretely spaced slats connected to a chain. The unit being transported retains its position (like a belt conveyor). Here the orientation and placement of the load is controlled. It is used for heavy loads or loads that might damage a belt. Live floor is a hydraulically-powered conveyor system which uses a series of moving slats to quickly move material across a flat deck of floor surface. The design of the slats including length, width and thickness depends upon the application. A two-way, variable speed hydraulic power unit moves the floor and allows for controlled loading, unloading and precision metering.