Ключевые слова: ailing, air pressure, boiler, broken, building, co2, compressed air, ddr, decay, defect, east germany, electricity, empty, energy, energy supply, environment, factory, flow, fuel, fuse box, hall, hdr, heating, heating house, historical, hot spring, hot water, industrial hall, industry, manometer, old, ostalgia, pipe, pipes, power plant, return, rotating wheel, rust, rusty, shutoff valve, tacho, temperature, unemployment, vacancy, valve, valves, warehouse,