Ключевые слова: black, chemical industry, closeup, color, commerce, construction, danger, economic, effect, energy, engineering, equipment, evening, facilities, factory, flare, framework, industrial, light, machinery, natural gas, night, oil field, operation, outdoor, petrochemical, petroleum, power, pressure, processing, production, professional, pumping unit, reflection, resources, safety, silhouette, sky, stents, structure, sun, sunset, support, surface, technical, trade, water, wild,