Ключевые слова: architect, architecture, background, builder, business, construction, contractor, employee, engineer, engineering, equipment, hand, hard hat, hardhat, hat, helmet, holding helmet, industrial, industry, inspector, job, labor, labor day, maintenance, man, management, manager, occupation, people, person, professional, protection, real estate, safety, safety helmet, safety work, security, service, site, supervisor, technician, transportation, trustworthy, work, worker, worker engineer, workplace, yellow, yellow hard hat, yellow helmet,