Mutual overview map
The mutation overview map or mutation map is kept by the mining authorities responsible for mining supervision and gives an overview of the pit fields awarded . In North Rhine-Westphalia , it is the Arnsberg district government , formerly the Dortmund Regional Mining Authority .
definition
The mutation overview map is a topographical map over a larger district, on which the mining authority plots the assumed fields according to the mutation or situation cracks. This is intended to provide an immediate overview of whether, for example, competing awards have already taken place.
Appearance
The field boundaries are marked in color and show which natural resources have been lent.
| colour | Natural resources |
|---|---|
| Gray | Hard coal |
| brown | Brown coal |
| green | Salts |
| yellow | Brine |
| blue | Non-ferrous metals (e.g. zinc, lead, copper, mercury, etc.) |
| red | Iron ores |
| violet | Fluorspar |
Individual evidence
- ^ Heinrich Veith , German mountain dictionary with documents, Verlag von Wilh. Gottl. Korn, Breslau 1871