truck, dump, sand, blade, bucket, building site, bulldozer, carbon, construction, dig, digger, dirt, earth, equipment, excavation, excavator, heavy, hydraulic, industrial, industry, iron, land, large, loader, machine, machinery, material, metal, mine, power, quarry, road, sandpit, tractor, transport, transportation, unloading, vehicle, wheel, work, yellow, activity, building, contractor, dozer, dumper, excavate, gravel, pit, ground