Spreckels, Volker; Engel, Thomas(Editorial Universitat Politècnica de València, 2023-01-27)
[EN] In 2017 the Mining Authorities Oberbergamt des Saarlands (OBA), the State Office for Survey, Geoinformation and Land Consolidation Saarland (LVGL) of the German federal state Saarland and the former mining company RAG ...