Ключевые слова: air, building, car, chemistry, chimney, construction, ecology, energy, engineering, environment, equipment, evening, factory, foundry, freight, furnace, heavy, industrial, industry, iron, lipetsk, manufacture, manufacturing, metal, metallurgical, metallurgy, nlmk, novolipetsk, pipe, pipeline, plant, pollutant, pollution, power, production, railroad, sky, smog, smoke, smokestack, stack, station, steam, steel, technology, tower, tube,