Schrön M., Dubiel J. (2016): Evaluierung einer Geothermieanlage zur Nutzung von Grubenwasser für Heizung und Kühlung auf dem Gebiet der Reichen Zeche, Projektarbeit, Technische Universität Bergakademie Freiberg
 Grötzsch S, Kleutges J.(2011): Geothermieanlagen zur Grubenwassernutzung für Heizung und Kühlung "Reiche Zeche" & "Schloss Freudenstein", Projektarbeit, Technische Universität Bergakademie Freiberg
Reiche Zeche Freiberg
Silver has been prospected in Freiberg going back to the twelfth century. During its active years, this mining town delivered 80% of the silver in Saxony. Today, however, the reserves are close to completely mined. Left behind are the town’s mining traditions along with many kilometres of underground mining tunnels, shafts, and adits. With its mine, the “Reiche Zeche”, Freiberg University of Mining and Technology is the only university in Germany in possession of a fully intact mine for teaching and research purposes.
During the controlled decommissioning and flooding of the tunnels after mining concluded, nature reclaimed parts of the mine. Shafts and tunnels which once led miners through the mine are now filled with water. While part of this water is due to precipitation that has seeped down from the surface, the other part is from deep-lying groundwater. Water from tunnels deep within the mine can rise through the mine’s shafts, as has occurred in the main shaft of the Reiche Zeche, the „Himmelfahrt Fundgrube“, for example. Here, geothermal energy is transported with the water from a depth of 750 m to only 228 m below the surface, yielding water temperatures of approximately 19°C year-round. The water then flows into a cooler underground drainage tunnel, the Rothschönberger adit. The university’s geothermal energy system at the Reiche Zeche makes use of this energy for heating and cooling purposes [1,2].
 Schrön M., Dubiel J. (2016): Evaluierung einer Geothermieanlage zur Nutzung von Grubenwasser für Heizung und Kühlung auf dem Gebiet der Reichen Zeche, Projektarbeit, Technische Universität Bergakademie Freiberg