Belt conveyers are employed for conveying various bulk and unit loads along horizontal or slightly inclined paths and for transporting articles between various operations in production flow lines. They have found wide application in all branches of industry and are the main means of mechanical transport in foundry shops (supply and distribution of molding sands and removal of wastes), in fuel-supply systems of electric power stations, for under ground and surface transport of coal and gangue in coal industry, for delivery of ores, coke and fluxes in metal making industries they transfer building materials, fossil minerals, grain, sand, stone etc.