The chute conveyor is one of the least expensive methods of conveying material. It is the simplest example of gravity-operated conveyor. Chute conveyor is used to provide accumulation in shipping areas; a spiral chute can be used to convey items between floors with minimum amount of space required. While the chute conveyors are economical, the main limitation of chute conveyors is the lack of control over the items being conveyed. The packages may tend to shift and turn so that jams and blockages occur