Ключевые слова: access, access point, basement, bomb shelter, connections, construction, controlling, electrical appliances, electricity, energy, engineering, equipment, facility, factory, futuristic, hidden, indicator, industrial, industry, infrastructure, iron, machinery, maintenance, manometer, metal, network, panel, pipe, pipeline, power, pressure, safety, service, steampunk, steel, supply, systems, technology, transport, tunnel, underground, utilities, utility, valve, ventilation, walls, water,