Material Handling cranes are usually found in scrap yards, recycling plants, at sawmills, or at a port. Types include Electric-powered material handlers, Stationary material handlers, Back of Cab and Crawler material handlers. The boom sections articulate and, instead of a Hook Block or Ball, the attachment is a claw or a grab which is used to pick up and transfer various industrial materials including bulk cargoes such as coal, minerals, and scrap metal, etc.