Sloping troughs, also known as chutes, are structures used to guide and control the flow of materials such as grain, coal, and other bulk materials. They are typically made of metal or wood and are designed with a sloped surface to allow gravity to move the material from one location to another. The sides of the troughs are usually lined with a material such as rubber or plastic to reduce friction and ensure a smooth flow of the material. Sloping troughs are commonly used in industrial settings, such as factories and warehouses, to transport materials from one area to another.