Ключевые слова: barrel, bolt, building, built, business, chemical, chemistry, closeup, complex, damper, drill, drilling, ecology, energy, engine, equipment, extraction, factory, field, fuel, fuel oil, gas, gasoline, greenpeace, industrial, nuts, oil, outdoor, overlapping, petrochemical, petroleum, pipe, pipeline, piping, plant, pollution, power, production, protection, pump, refinery, russia, siberia, steam, supply, technology, tree, valve, well, wheel,