LGRB-BW RAW: Underground raw material extraction (areas)

Description of underground mining areas as well as the former mining area (e.g. T. Enveloping). The following areas are distinguished: Property, which is subdivided into the land types of mining area, currently affected by the mining area (“punctured” area), including areas that may be filled. Extension area = still “uncut”, but already approved for the mining and former mining area, which is partly depicted as enveloping. The collection centres recorded in the database have a unique name (operating ID) consisting of the TK25 sheet number and a serial number (archive number, Arnum for short). The following means: (1) Arnums up to and including 99: Extraction sites that have been collected since the mid-1980s as part of the raw material security concept. (2) Arnums from 100 up to and including 299: Collection points that were collected in the 1950s. (3) Arnums from 300: Mining sites whose mining was completed before the mid-1980s.