Bochum A perfect double rainbow over the Hardeck furniture store in Bochum Werne A back road in Bochum Kornharpen Apartment houses and farmland in Bochum Kornharpen Regenbogen über Bochum Kornharpen – A rainbow over Bochum Kornharpen A new photovoltaic (solar) park on the Kornharpen landfill which produces 800 kWp. The landfill produces 30.000 cubic metres of gas daily, which is used to produce electricity for 9700 homes and heat for 2500 homes. Zeche Robert Müser (1929-1968), Bochum Werne Zeche Vollmond (1801-1926) was one of the first coal mines in Bochum, adjacent to the closed down pub sharing the same name. Kornharpen used to have nine farms. A few of them remain today in Kornharpen, which is Bochum’s smallest city district.