Machines and machine tools; motors and engines (except for vehicles); mining equipment; screening devices; all conveying, treating, benefication and dressing equipment including centrifugal machines, crushers, conveyors, elevators, hoppers, agitators, drying equipment, mixing equipment, dust collectors, washing equipment, separators, granulators, extractors, disintegrators, separators, mills, classifiers and parts, fittings and components for the aforegoing