Ключевые слова: activity, build, building materials, construction, construction material, conveyor, conveyor belt, crush, crusher, dust, ecology, environment, equipment, excavation, excavator, factory, gravel, heap, heavy, hill, industrial, industry, limestone, machine, machinery, manufacturing, mine, mining, mining industry, mining machine, mountain, occupation, outdoor, pit, plant, processing, production, quarry, quarrying, raw, resources, rock, sand, stone, stone crusher, stone pit, stonepit, technology, transport, transportation, work, worker,