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| Asse II mine | |
|---|---|
| Name | Asse II |
| Other name | Schachtanlage Asse II |
| Country | Germany |
| State | Lower Saxony |
| District | Wolfenbüttel |
| Coordinates | 52°11′N 10°35′E |
| Established | 1909 |
| Owner | Bundesrepublik Deutschland (after 2009) |
| Type | Salt and potash mine, later radioactive waste repository |
Asse II mine Asse II is a former salt and potash shaft complex near Remlingen and Wittmar in Lower Saxony, Germany, converted into a deep geological repository for low- and intermediate-level radioactive waste. The site played roles in industrial mining, nuclear-era waste disposal, and contemporary remediation, attracting scrutiny from the International Atomic Energy Agency, Bundesanstalt für Materialforschung und -prüfung, and German federal ministries. Controversies involve engineering, hydrogeology, public health, and legal accountability with connections to entities such as Helmholtz-Zentrum Geesthacht, Technische Universität Clausthal, and Umweltbundesamt.
Asse II was developed by Bergbaugesellschaft Asse-II and predecessor firms beginning in 1909, expanding through 1930s operations linked to Ruhr industry suppliers and regional rail networks like Deutsche Reichsbahn. During World War II, miners from organizations including Reichsbahn and Reichsarbeitsdienst worked alongside firms connected to Krupp and BASF supply chains; postwar reconstruction involved Reichsbahn successor Deutsche Bundesbahn and state ministries. Nuclear-era decisions in the 1960s and 1970s saw Gesellschaft für Strahlenforschung, Kernforschungszentrum Karlsruhe, and Niedersächsisches Ministerium für Inneres endorse waste emplacement, while operators such as Gesellschaft für Nuklear-Service coordinated transfers from facilities at Karlsruhe, Jülich Research Centre, and Philippsburg. Public debate rose after reports by Bundesamt für Strahlenschutz, Niedersächsische Landesregierung, and environmental NGOs including Greenpeace and BUND. Parliamentary inquiries by Bundestag committees and regional assemblies of Lower Saxony escalated scrutiny, prompting legal claims involving Landgericht Braunschweig and Bundesverfassungsgericht precedents.
The mine exploited Zechstein salt formations, potash seams, and halite beds characteristic of the North German Basin and Harz foothills; lithostratigraphy was studied by Bundesanstalt für Geowissenschaften und Rohstoffe, Leibniz Institute, and TU Clausthal researchers. Tunnel networks reached galleries at 520 to 750 meters, intersecting salt domes analogous to deposits studied near Gorleben, Morsleben, and Konrad. Mining engineering firms such as MAN and Krupp supplied shafts, hoists, and ventilation systems; geomechanical investigations involved Helmholtz Centre Potsdam and GFZ German Research Centre for Geosciences. Hydrogeological connections to the Elm-Lappwald aquifer and Werra salt springs were modeled by institutes including Helmholtz-Zentrum Geesthacht and Niedersächsischer Landesbetrieb für Wasserwirtschaft; faults and fracture networks were mapped with assistance from Leibniz Universität Hannover and Deutsches Bergbau-Museum Bochum.
Between the 1960s and 1978, operators received low- and intermediate-level radioactive waste consignments from nuclear facilities such as Kernkraftwerk Obrigheim, Forschungsreaktor Jülich, and Forschungszentrum Karlsruhe, coordinated with Kraftwerk Philippsburg shipments and transports regulated under Bundesamt für Strahlenschutz guidance. Waste custodians included Gesellschaft für Nuklear-Service, Kerntechnische Entsorgung Karlsruhe, and industry partners like Siemens and Areva. Emplaced materials encompassed vitrified residues, activated components from Forschungseinrichtungen, sealed sources from Universitätsklinikum Göttingen, and solidified chemical wastes under oversight frameworks influenced by IAEA recommendations and EURATOM directives. Inventory assessments were conducted by Helmholtz-Zentrum Dresden-Rossendorf, PTB, and Federal ministries, while inventory databases referenced packaging records from GNS and reports prepared for the Niedersächsisches Umweltministerium.
Concerns emerged about brine intrusion, salt creep, and radionuclide mobilization potentially affecting potable sources tied to Wasserverband and municipal supplies for Braunschweig and Wolfenbüttel. Studies by Umweltbundesamt, Robert Koch Institute, and Bundesinstitut für Risikobewertung evaluated radiological exposure scenarios; epidemiological reviews referenced data from Universitätsmedizin Göttingen and Klinikum Braunschweig. NGOs including Greenpeace, BUND, and Friends of the Earth raised alarms about groundwater contamination, long-term containment, and institutional transparency, while international bodies such as IAEA and OECD Nuclear Energy Agency reviewed safety cases. Technical critiques by TU Clausthal, Technische Universität Dresden, and Fraunhofer Institute highlighted geotechnical stability, brine inflow risks, and corrosion of waste containers, prompting emergency monitoring by Niedersächsischer Landesbetrieb für Wasserwirtschaft and Bundesanstalt für Materialforschung und -prüfung.
Remediation strategies were developed by Bundesamt für Strahlenschutz, Gesellschaft für Nuklear-Service, and Bundesministerium für Umwelt, entailing retrieval of waste packages, artificial backfilling, and controlled flooding scenarios modeled with contributions from Helmholtz Centres, RWTH Aachen, and Technische Universität Berlin. Pilot retrievals involved remote-handling systems supplied by KUKA and ABB Robotics, while repository ventilation and brine management plans referenced designs by MAN Energy Solutions. Academic partners from Leibniz Universität Hannover and TU Clausthal contributed to tracer tests and numerical modeling; contractors included Hochtief and BAM Federal Institute for Materials Research and Testing. International exchanges involved experts from IAEA, OECD NEA, and UK Nuclear Decommissioning Authority, informing best practices and adaptive management for long-term stewardship.
Legal disputes engaged Landgerichte, Oberverwaltungsgericht Lüneburg, and Bundesverwaltungsgericht with cases citing administrative decisions by Niedersächsisches Umweltministerium and Bundesumweltministerium policy. Parliamentary debates in the Bundestag and Niedersächsischer Landtag invoked positions from CDU, SPD, Bündnis 90/Die Grünen, and FDP representatives; oversight commissions included Wissenschaftlicher Beirat and Unabhängige Kommission. Compensation claims involved municipal actors such as Gemeinde Wittmar and Landkreis Wolfenbüttel, while European legal frameworks referenced EURATOM obligations and rulings considered by the European Commission. Political implications affected nuclear policy dialogues involving Energiewende stakeholders, Bundeskanzleramt briefings, and energy utilities including RWE and E.ON, shaping national approaches to radioactive waste governance and site remediation.
Category:Mines in Lower Saxony Category:Radioactive waste repositories in Germany Category:Environmental controversies in Germany