Ключевые слова: blue, business, chemical, chemistry, chimney, color, distillery, energy, engineering, environment, equipment, factory, fuel, gas, gasoline, global, heavy, high, industrial, industry, iron, manufacture, manufacturing, metal, oil, petrochemical, petrol, petroleum, pipes, plant, pollute, pollution, power, process, production, refinery, resource, silo, sky, smoke, station, steam, steel, structure, sunset, supply, technology, tower, warming, work,