Dredges and excavators on articulated tracks on wheels or on watercraft, bucket-wheel machines, mechanical shovels, stockpile reclaiming and stockpile blending machines, sampling machines and equipment for use with bulk material, hoisting and hauling machinery including cranes, derricks, mechanical loading equipment, loading bridges, ship-loaders for bulk and cargo handling walking mechanisms for shifting heavy machinery and equipment, mining machinery, crushers and other mining equipment included in this class; earth-moving machines, building machinery, feeders, stackers, conveyors; also parts included in this class of any of the aforementioned machinery, machines, equipment and mechanisms, including articulated tracks or crawlers, wheeled and stationary frames gantries, boom conveyor belts, buckets, bucket pins, rakes, rollers, gears, idlers parts thereof including cylinders, plungers, pistons, Piston rods and hydraulic valves, screens and sieves forming parts of mining and other machinery