Ключевые слова: architect, building, business, caucasian, construction, development, employee, energy, engineer, engineering, face, facility, factory, gas, hard hat, hardhat, heavy, helmet, industrial, industry, job, machinery, male, man, manufacture, manufacturing, metalwork, modern, occupation, oil, person, petroleum, pipe, pipeline, plant, portrait, power, production, profession, professional, protection, safety, smiling, steel, successful, technology, transportation, uniform, work, worker,