TOP 10 World's Largest Bulldozers That ARE On Another Level Bulldozers are essential parts of certain operations. These large, motorized machines are equipped with metal blades in front used for pushing materials like soil, sand, snow, rubble, or rock during construction work. Dozers are also used for shallow digging and ditching, short-range transportation of material, spreading soil dumped from trucks, rough grading, removal of some materials, as well as cleaning and levelling around loading equipment. In today's MIGHTY MACHINES video..World's 10 Largest Bulldozers