Soil compactors used to compact sand, gravel, clay or rock soils compactor rollers for road, port, railroad or airport construction projects large and powerful sheepsfoot rollers or smooth rollers compactors, which work by adjusting their frequency and amplitude for each type of soil self propelled drum compactors or vibratory rollers, used in with other industrial machines such as excavators, bulldozers, articulated trucks, backhoes or motor graders