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 60 Machine-tools for deburring, sharpening, grinding, honing, lapping, polishing or Commodity Code Description 84 60 11 84 60 12 Numerically controlled 84 60 19 84 60 21 84 60 22 Centreless grinding machines, numerically controlled 84 60 23 Other cylindrical grinding machines, numerically controlled 84 60 24 Other, numerically controlled 84 60 29 84 60 31 84 60 39 84 60 40 84 60 90