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 29 Self-propelled bulldozers, angledozers, graders, levellers, etc Commodity Code Description 84 29 11 Track laying 84 29 19 Other bulldozers and angledozers 84 29 20 Graders and levellers 84 29 30 Scrapers 84 29 40 Tamping machines and road rollers 84 29 51 Front-end showel loaders 84 29 52 Machinery with a 360 degree revolving superstructure 84 29 59 Other mechanical showels, excavators and showel loaders