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 30 Earth moving... machinery, nes; pile-drvers/extractors; snow-ploughs 84 30 41 Self-propelled boring or sinking machinery Commodity Code Description 84 30 41 00 Self-propelled boring or sinking machinery