Ключевые слова: blue, business, chemical, chemistry, chimney, connection, construction, crude, diesel, distillery, energy, engineering, equipment, factory, fuel, gas, gasoline, industrial, industry, light, manufacturing, metal, night, oil, petrochemical, petrol, petroleum, pipe, pipeline, piping, plant, plumbing, pollution, power, production, pump, refinery, smoke, steel, storage, structure, supply, system, tank, tanker, technology, tower, transportation, tube, work,