Drag chain conveyors are an effective and efficient way to move or elevate bulk materials. The principle operation of drag conveyors is to move material using a skeletal chain and flight assembly that is drawn along the bottom section of an enclosed housing.   Drag conveyors are designed in both single and dual chain configurations. The type of configuration is determined by factors such as chain pull, capacity requirements, and the bulk material characteristics. Drag conveyors are well suited to handle steep inclines as well as applications that require transitions from horizontal to incline. They also operate at slow speeds, typically using less energy and horsepower then other types of conveying systems.