Ключевые слова: african, architect, architecture, background, builder, built, business, clothing, construction, contractor, design, employment, engineer, engineering, equipment, foreman, hand, hardhat, hat, helmet, human, industrial, industry, inspector, job, labor, male, man, occupation, one, people, person, plan, portrait, product, production, profession, professional, project, protection, protective, safety, site, tool, work, worker, workman, workplace,