Ключевые слова: blue, building, business, construction, dark, derrick, drilling, energy, engineer, engineering, environment, equipment, exploration, explosion, factory, field, fire, fuel, gas, gasoline, heavy, industrial, industry, light, man, night, oil, oilfield, orange, people, person, petrol, petroleum, pipe, pipeline, plant, platform, pollution, power, production, pump, pumpjack, refinery, rig, road, safety, silhouette, technology, work, worker,