Ключевые слова: adult, architect, brake, builder, checking, construction, contractor, development, engine, engineer, engineer railway, engineering, equipment, factory, foreman, hardhat, helmet, industrial, industry, inspection, job, logistic, machine, maintenance, male, man, mechanical, occupation, professional, project, railroad, railway, repair, safety, shipping, site, supervisor, teamwork, technician, technology, track, train, transport, transportation, warehouse, worker, worker railway, workers, workman,