Ключевые слова: adult, chemical, construction, contractor, delivery, employee, engineer, engineering, factory, foreman, freight, fuel, handyman, hardhat, helmet, industrial, industry, inspector, job, locomotive, logistic, machine, maintenance, mechanic, oil, outdoors, people, person, petrol, petroleum, posing, professional, protection, rail, railroad, railway, safety, service, shipment, shipping, smiling, tanker, teamwork, technician, track, train, transport, transportation, vehicle, worker,