Construction machines, namely, excavating machines,[ power-operated impact hammers for foundation work,] [ augers, ] pile-drivers[, pile-extractors; compactors,] graders,[ tampers,] bulldozers, [rammers, concrete mixers, concrete vibrators, concrete pumps,] asphalt paving machines,[ and dredging machines;] [ loading-unloading machines, namely, cranes, conveyors, hoisting and winding gears as parts of cranes; moving sidewalks, escalators; power jacks; unloading hoppers; automatic warehousing systems consisting primarily of power-operated elevating platforms and storage shelves; mining machines, namely, cutter loaders, coal cutting machines, oil-well pumping machines, rock drills, well drilling machines, mine drill sharpeners, mine borers, coal loaders, truck mills and coal ploughs;] agriculture machines, namely,[ plowing machines, cultivating machines,] harvesting machines,[ plant fiber processing machines, fodder presses, feed cutters, feed mixers and feed mills; ] machine parts for the above, namely, shafts,[ axles, spindles, bearings, shaft couplings, shaft connectors, shock absorbers, springs, brakes,] and valves [and power transmissions and gearing] for machines