Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 56 Machine tools for working any material by removal of material, by laser or other light or photon beam, ultrasonic, electrodischarge, electrochemical, electron beam, ionic-beam or plasma arc processes; water-jet cutting machines Commodity Code Description 84 56 11 - - Operated by laser 84 56 12 - - Operated by other light or photon beam processes 84 56 20 - Operated by ultrasonic processes 84 56 30 - Operated by electro-discharge processes 84 56 40 - Operated by plasma arc processes 84 56 50 - Water-jet cutting machines 84 56 90 - Other