Ключевые слова: adult, blue collar, concentration, confidence, consulting, control, corporate, daytime, efficiency, employment, energy, engineer, executive, expertise, facilities, happy, helmet, industrial, industry, infrastructure, maintenance, male, management, manufacturing, occupation, oil plant, operational, outdoors, petroleum, piping, planning, productivity, professional, protective gear, refinery, reflected, responsibility, safety, safety glasses, safety vest, site, smile, smiling, steel, supervisor, tablet, technology, worker, working, workwear,