Ключевые слова: action, architect, architecture, background, builder, building, business, caucasian, construction, contractor, crane, crew, democracy, demonstration, development, energy, engineer, equipment, factory, fog, gas, group, helmet, industrial, labor, maintenance, male, manufacturing, meeting, men, occupation, oil, person, plant, power, production, professional, real, refinery, revolution, rig, safety, site, steel, sunset, team, technology, work, workers, young,