Ключевые слова: bentonite, bulldozer, construction, copper, crusher, curve, cut, deep, development, dig, digging, dirt, dump, earth, environment, environmental, equipment, excavate, excavation, excavator, exploitation, extracting, freight, geology, ground, heavy, hole, industrial, industry, kaolin, large, machine, machinery, metal, mine, mineral, mining, open, pit, pollution, quarry, resource, rock, shoveling, site, stone, surface, technology, transportation, truck,