Ключевые слова: agreement, business, businessman, commerce, construction, contractor, control, derrick, drilling, economy, energy, engineer, equipment, expertise, exploration, fossil, fuel, gas, gasoline, generative, government, helmet, industrial, industry, inspection, jack, maintenance, mining, oil, oilfield, person, petroleum, pipeline, pollution, power, produces, production, pump, raw, refinery, rig, safety, silhouette, strength, supply, technology, to the, unrecognizable, well, worker,