Section 16 MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THERE OF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORD ERS AND REPRODUCERS, AND PARTS AND ACCESSORIES OF SUCH ARTICLES 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 30 Other moving, grading, levelling, scraping, excavating, tamping, compacting, ext 84 30 61 Used or reconditioned 84 30 61 90 Used or reconditioned Commodity Code Description 84 30 61 90 00 -- Tamping or compacting machinery