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