Ключевые слова: africa, african, background, black, business, caucasian, coal, construction, coveralls, crushing, dirty, employee, engineer, equipment, excavation, extraction, gold, hard, harvester, hat, helmet, human, indian, industry, job, kemerovo, labor, labours, light, male, man, mine, miner, minerals, overalls, people, portrait, power, professional, risk, rus, russia, safety, smile, tunnel, underground, uniform, work, worker,