A string of transport belting in a gravel pit for transporting gravel and sand over long distances, belts go along the road.belting, gravel pit, conveyor, machinery, sand, mine, belt, large, industry, pit, gravel, industrial, technology, quarry, mineral, transportation, equipment, long, machine, factory, geology, rock, stone, crusher, transport, soil, outcrop, dig, crushing, ground, plant, steel, dust, crushed, open-pit, pebble, loading, minerals, cement, rubble, mining, raw materials, conveyors, roll