Ключевые слова: activity, aggregate, background, belt, building, chop, construction, conveyor, crush, crusher, dust, earth, engineering, equipment, excavation, factory, gravel, grind, heavy, industrial, industry, job, landscape, line, machine, machinery, material, metal, mine, mineral, mining, mountain, pit, plant, production, pulverize, quarry, quarrying, rock, sand, sandpit, stone, technology, transportation, work,