Ключевые слова: and the sky, business, control, crude oil, derrick, drilling, energy, engineers and workers, equipment, exploration, extraction, field, fuel, gasoline, helmets, in the evening, industrial, industry, job, live, machines, manufacturing, metal, natural gas, oil, oil pipelines, oil refineries, oil valves, oil workers, oilfield, outdoor, outline, people, pipeline engineering, profession, pump, resources, technology, work,