Ключевые слова: activity, business, caucasian, cave, clothing, coal, construction, coveralls, employee, employer, engineer, engineering, expression, front, hard, hardhat, hat, helmet, human, industrial, industry, labor, laborer, male, man, mask, mine, miner, nature, one, outdoor, outfit, person, positive, power, production, professional, repairman, safety, smile, stand, tool, underground, uniform, unionalls, view, work, worker, workman,