7 material handling machines, namely, conveyors, leveler machines in the nature of metal working machines, draw bench machines in the nature of metal working machines and components therefor; components for conveyors, leveler machines in the nature of metal working machines, and draw bench machines in the nature of metal working machines, namely, conveyor chain, wheels, rollers, pins, bushings, buckets, sprockets, and bearings; leveler machines in the nature of metal working machines and components therefor, namely, work rolls, bearings, and cassettes; tension leveler machines in the nature of metal working machines and components therefor; flattener machines in the nature of metal working machines and components therefor; manufacturing conveyor machines and components therefor, namely, conveyor chain, wheels, and rollers; coil conveyor machines and components therefor, namely, conveyor chain, wheels, and rollers; mining conveyor machines and components therefor, namely, conveyor chain, wheels, and rollers; apron conveyor machines and components therefor, namely, conveyor chain, wheels, pans, side wings, links, and bearings; draw bench machines in the nature of metal working machines and components therefor, namely, draw bench chain; components for leveler machines in the nature of metal working machines, namely, work rolls, cassettes, and bearings; work rolls for leveling machine equipment