Ключевые слова: angle, belt, blue, building, cloud, cloudy, complex, construction, conveyor, crusher, crushing, demolition, dump, environment, equipment, facility, factory, fall, fraction, framework, heavy, industrial, industry, low, machine, machinery, manufacturing, material, materials, mobile, old, open, operation, pile, plant, process, production, raw, recycling, rock, shot, site, sky, soil, sort, technique, technology, work,