Ключевые слова: america, american, background, barrel, business, construction, crisis, crude, diesel, dollar, drill, drilling, ecology, economy, energy, environment, equipment, extraction, fall, finance, flag, fossil, fuel, gas, gasoline, illustration, industrial, industry, jack, machine, market, oil, petrol, petroleum, pipe, pipeline, plant, pollution, power, price, production, pump, refinery, rig, sky, supply, symbol, usa, world,