Ключевые слова: big, car, chalk, chalky, cretaceous, diesel, digging, dirty, dump, dumper, earth, environment, equipment, excavation, excavator, extraction, geology, gray, ground, heavy, industrial, industry, large, limestone, loader, lorry, machine, machinery, mine, mineral, mining truck, mountain, open, opencast, ore, pit, production, quarry, road, rock, stone, surface, tipper, transport, transportation, truck, vehicle, wheels, work, yellow,