Ключевые слова: background, building, business, chemical, construction, control, energy, engineer, engineering, environment, equipment, factory, fuel, gas, gasoline, helmet, industrial, industry, inspection, inspector, job, maintenance, man, manufacturing, metal, occupation, offshore, oil, people, person, petrochemical, petrol, petroleum, pipe, pipeline, pipelines, plant, platform, pollution, power, production, professional, refinery, rig, safety, steel, technician, technology, work, worker,