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 31 New 84 30 31 10 New Commodity Code Description 84 30 31 10 00 -- Self-propelled