1. Self-propelled bulldozers, angledozers, graders, levellers, scrapers, mechanical shovels, excavators, shovel loaders, tamping machines and roadrollers

2. Thus , while in 1950 - 51 , almost all machinery had to be imported , after fifteen years of planned development , a high degree of self - sufficiency was achieved in respect of a wide range of capital goods : electric motors below 200 hp , L . T . switchgears , commercial vehicles and other automobiles , wagons , roadrollers , textiles , sugar and cement machinery , industrial boilers , tea processing machinery , diesel engines , power - driven pumps , ball bearings , mechanical handling equipment , telephone equipment and teleprinters .