High Grethe
| High Grethe | |||
|---|---|---|---|
| General information about the mine | |||
| Information about the mining company | |||
| Start of operation | before 1698 | ||
| End of operation | 1900 | ||
| Funded raw materials | |||
| Degradation of | Brown iron stone , Spate iron stone , copper gravel | ||
| Greatest depth | 72 m | ||
| Geographical location | |||
| Coordinates | 50 ° 51 '45.8 " N , 8 ° 0' 51.8" E | ||
|
|||
| Location | Wins | ||
| local community | Wins | ||
| District ( NUTS3 ) | Siegen-Wittgenstein | ||
| country | State of North Rhine-Westphalia | ||
| Country | Germany | ||
| District | Bergrevier Siegen II | ||
The Hohe Grethe mine was an iron ore and copper mine on the Rosterberg in Siegen in the Siegen-Wittgenstein district . It was one of the most important mines in the former Siegen II mining area and became widely known for the “ Siegener Loch ”.
history
The Hohe Grethe mine was first mentioned in 1698. However, mining on the Rosterberg is probably older. Brownstone and spate iron stone as well as copper pebbles were mined in an upper gallery and in a deep gallery in an ore deposit with thicknesses of up to 8.5 m and a length of 150 m. In 1775 the production was 800 Eisenstein wagons. As early as the 18th century, civil engineering was carried out in an art shaft with bicycle art down to a depth of 24 m .
In 1865 the mine consolidated with smaller pits in the area:
- Fresh Grethe
- Old Weiberborn
- Christophszeche
- Black Forest
- lark
- Middle Grethe (to Häuslingstiefe )
- Foremost Grethe
- High Ley
Then it was decided to civil engineering. The blind shaft that was built reached a depth of 42 m in 1871. The first sole was created there. The second and last floor of the pit lay at a depth of 72 m, which is low by Siegerland standards. A 158 m long corridor was cut there. From 1870 the work was supported by the use of a steam engine. In 1876 the production at Hohe Grethe was stopped. The production in this year amounted to 1405 t Brauneisenstein and 97 t Spateisenstein.
In the years 1899 and 1900, production was resumed and a total of 7770 t of ore was mined. Then Hohe Grethe was finally shut down. Investigations in 1917 and 1924 could not change this either.
The "Siegener Hole"
In February 2004, day breaks on the Rosterberg made headlines across Germany as the “ Siegener Loch ”. The breaches opened in the area of the Hohe Ley operations department . The security measures lasted a year, consuming around four million euros and 22,000 t of material.
Further safety measures in the area of the Rosterberg and under the Siegerlandhalle , which had become necessary due to constant breaks in the day , continued until the end of 2010. Since 2007, a specialist company from Thuringia has been involved.
See also
Individual evidence
- ^ A b T. Hundt, G. Gerlach, F. Roth, W. Schmidt: Description of the mountain areas Siegen I, Siegen II, Burbach & Müsen ; Bonn 1887
- ↑ After the 'Siegener Loch' further breaks in the day ( memento from September 6, 2010 in the Internet Archive )