Ключевые слова: bucket, coal, construction, conveyor, dig, dirt, dirty, dump, dust, earth, engineering, environment, environmental, equipment, excavation, excavator, factory, geology, ground, heavy, industrial, industry, iron, material, metal, miner, mover, nature, open, opencast, openpit, outdoors, pit, power, raw, resource, rock, site, soil, steel, stone, surface, work,