Ключевые слова: activity, architect, architecture, background, blueprint, building, business, businessman, chemical, construction, contractor, energy, engineer, engineering, environment, equipment, friendly, gas, goggles, hard, hardhat, hat, head wear, industrial, industry, inspection, inspector, male, man, manager, metal, notes, occupation, oil, person, petrochemical, pipe, planner, plans, plant, power, protective, refinery, site, steel, technology, wear, work, worker, write,