Ores of various base metals were being mined in the Siebengebirge area as early as the Middle Ages, primarily for the production of copper, zinc and lead. In addition to the work in the mines themselves, their constant need for charcoal led to there being many charcoal producers in the region. A copper mine called Gotteshilfe was located in Neichen, and in Brüngsberg there were mines called Flora, Anrep-Zachäus and Emma-Sofie, where zinc and copper ores were mined until early in 1906. The heaps of tailings from the mines can still be seen on the slope of the Logebach valley. With declining prices for the metals, the mines in the Siebengebirge area gradually closed down.