equipment, excavator, machinery, vehicle, bulldozer, tractor, backhoe, sand, earthmover, building, gravel, machine, mining, yellow, earth, industry, mover, soil, unloading, aerial, quarry, pit, truck, land, construction, development, site, track, transportation, aggregate, mine, background, stone, crushed, limestone, transport, dust, industrial, material, caterpillar, loader, front, digger, end, bucket, iron, arm, business, hydraulic, landscape