Sigmundshall potash plant
| Sigmundshall potash plant | |||
|---|---|---|---|
| General information about the mine | |||
 |
|||
| other names | Potash drilling company Wunstorf | ||
| Mining technology | Chamber funnel construction | ||
| Funding / year | 2.3 million (2016) t | ||
| Funding / total | 130 million (2018) t of crude salt | ||
| Rare minerals | Leonite, Halite | ||
| Information about the mining company | |||
| Operating company | K + S | ||
| Employees | 770 | ||
| Start of operation | 1898 | ||
| End of operation | December 2018 | ||
| Funded raw materials | |||
| Degradation of | Sylvinite / kieseritic hard salt | ||
| Sylvinite | |||
| Ronnenberg | |||
| Mightiness | 30 m | ||
| Raw material content | 17% | ||
| Greatest depth | 1400 m | ||
| kieseritic hard salt | |||
| Degradation of | kieseritic hard salt | ||
| Staßfurt | |||
| Raw material content | 32.7% | ||
| Geographical location | |||
| Coordinates | 52 ° 25 '8.9 " N , 9 ° 22' 9" E | ||
|
|||
| Location | Tienberg | ||
| local community | Wunstorf | ||
| Region ( NUTS3 ) | Hanover | ||
| country | State of Lower Saxony | ||
| Country | Germany | ||
| District | Northern Hanover potash district | ||
The Sigmundshall potash plant , named after the former chairman of the supervisory board, Sigmund Meyer , is a former potash mine in the Bokeloh district of Wunstorf . It was the last producing potash mine in Lower Saxony . Mining was stopped on December 21, 2018 with the symbolically last barrel extracted due to depletion of stocks.
geography
Geographical location
The Sigmundshall potash plant is located around 25 km northwest of Hanover and 5 km south of the Steinhuder Meer near Wunstorf.
geology
The deposit of the Sigmundshall potash works is the Bokeloh salt dome, which extends along the Steinhuder-Meer line for about 12 km in a NW-SE direction and is between 500 and 1000 m wide. The Bokeloh salt dome was formed around 140 million years ago through the rise of the 255 million year old Zechstein layers . Its base is at a depth of more than 3,000 meters. It consists of the layers of the Aller and Leine series. The potash seams of Staßfurt (K2H) and Ronnenberg (K3Ro) are well developed. Mining was carried out at a depth between 350 and 1400 meters.
The salt dome is in the north-east by the cowardly incident red sandstone limited, the younger Allerschichten create concordant to. It is intensely folded, the main anhydrite and the Staßfurt seam dip between 60 and 75 ° to the south-west.
The salt dome is anhydrous; Since the beginning of the geological exploration until today, no lye has been found.
Hydrogen sulphide was unexpectedly encountered during drilling in 2012 , a phenomenon that has never been seen before in German potash mining.
history
The Hanoverian banker Sigmund Meyer was "one of the first to take on the young potash industry in the province of Hanover [...]". He was elected chairman of the supervisory board of the potash plant named after him.
In 1898 a Mathias trade union acquired the mine ownership in the fields of the later Sigmundshall potash works. In 1902 the Mathias union was taken over by the Alkaliwerke Sigmundshall Aktiengesellschaft . In 1906 the plant was connected to the Steinhuder Meer Railway . A year later, Sigmundshall AG acquired 4000 of the 5000 Kuxe of the Weser union . On January 1, 1922, Sigmundshall AG was taken over by the Consolidierte Alkaliwerke Westeregeln . In 1937 the three companies Kaliwerke Salzdetfurth AG , Kaliwerk Aschersleben AG and AG Consolidierte Alkaliwerke Westeregeln merged to form the United Kaliwerke Salzdetfurth AG . Berlin was chosen as the seat of the new company.
In 1970 the potash mines of Wintershall AG and Vereinigte Kaliwerke Salzdetfurth AG merged . The result was Kali und Salz GmbH Kassel, which was converted into Kali und Salz AG in 1971 . In 1993, K + S and Mitteldeutsche Kali AG merged to form Kali und Salz GmbH , based in Sondershausen. The Kali und Salz AG was in Kali und Salz Beteiligungs AG renamed.
Mining museum
The "Mining Museum Schacht Weser" is housed in the gatehouse of the Weser shaft in Altenhagen .
Accidents
5 April 2012 occurred in drilling in 1200 m depth hydrogen sulfide from . 1 miner was killed by the toxic gas, 3 were injured and 23 other miners were brought to a hospital for observation as a precaution. The cause of the accident was investigated by the Lower Saxony State Office for Mining, Energy and Geology .
literature
- Potash drilling company Neu-Wunstorf . In: Germany's Potash Industry No. 10, 1906 . Free supplement to "Industrie", daily newspaper for coal, potash and ore mining, May 9, 1906, pp. 69–74
- Gerd Gessert, Erich Hofmeister: The mining of potash salts at Steinhuder Meer in the Sigmundshall potash plant in Bokeloh . In: Mining Working Group of the Adult Education Center Schaumburg (ed.): Excursion guides and publications Schaumburger Bergbau . No. 24 . Hagenburg October 2011 ( The mining of potash salts on the Steinhuder Meer in the Sigmundshall potash works in Bokeloh [PDF; 532 kB ; accessed on September 15, 2016]).
Web links
- Sigmundshall – Wunstorf. Retrieved April 6, 2012 .
- Potash mining in Sigmundshall. In: Mineralienatlas. Retrieved April 8, 2012 .
- Ralf E. Krupp: Potash mining and aluminum recycling in the Hanover region. (PDF; 1.7 MB) A study on grievances and potential for improvement. Association for the Environment and Nature Conservation Germany, March 2004, accessed on April 8, 2012 .
- Erich Hofmeister: Mining museum in the gatehouse of "Schacht Weser", Hagenburg-Altenhagen. (PDF; 176 kB) Accessed April 8, 2012 .
- Hans-Heinz Emons: The Potash Industry - History of a German Industry? (PDF) Revised and extended version of the lecture in the plenum of the Leibniz Society on April 19, 2001. (No longer available online.) P. 37 , formerly in the original ; Retrieved April 14, 2012 . ( Page no longer available , search in web archives )
- Thomas Krassmann: Geology and mining of the Schaumburger Land and its peripheral areas. (PDF; 1.4 MB) Part February 3, 2011, pp. 15–19 , accessed on April 14, 2012 .
Individual evidence
- ↑ a b Peter Schulze : Meyer, (11) Sigmund . In: Klaus Mlynek, Waldemar R. Röhrbein (eds.) U. a .: City Lexicon Hanover . From the beginning to the present. Schlütersche, Hannover 2009, ISBN 978-3-89993-662-9 , p. 441.
- ↑ People and technology at the limit: K + S closes Sigmundshall. n-tv, November 29, 2018, accessed November 29, 2017 .
- ↑ Gerd Gessert, Erich Hofmeister: The mining of potash salts at Steinhuder Meer in the Sigmundshall potash plant in Bokeloh . In: Mining Working Group of the Adult Education Center Schaumburg (ed.): Excursion guides and publications Schaumburger Bergbau . No. 24 . Hagenburg October 2011, p. 11 ( The mining of potash salts on the Steinhuder Meer in the Sigmundshall potash plant in Bokeloh [PDF; 532 kB ; accessed on July 22, 2020]).
- ↑ Sigmundshall - After 120 years, potash mining ended. K + S Kali, accessed on July 22, 2020 .
- ↑ Jörg Hammer et al .: Salt geological evaluation of the influence of “cryogenic fissures” and halokinetic deformation processes on the integrity of the geological barrier of the Gorleben salt dome . Report on work package 2 Preliminary safety analysis for the Gorleben site. Ed .: Federal Institute for Geosciences and Raw Materials . Hannover 2012, ISBN 978-3-939355-49-6 , 2.3 Regional and structural geological findings on the genesis of the Bokeloh salt dome ff., P. 9–25 ( Salt geological assessment of the influence of “cryogenic fissures” and halokinetic deformation processes on the integrity of the geological barrier of the Gorleben salt dome [PDF; 6.3 MB ; accessed on September 15, 2016]).
- ^ Jan Kreßner, Tor Ingolf Hunsbedt, Jörg Weißbach: 4-day excursion salt mechanics. (PDF; 2 MB) March 30, 2001, accessed April 8, 2012 .
- ^ Paul Siedentopf (main editor): Bankhaus Adolph Meyer . In: The book of the old companies of the city of Hanover in 1927 . Jubilee publisher Walter Gerlach, Leipzig 1927, p. 152
- ^ A dead person in a mine accident in the salt mine near Hanover. Archived from the original on April 16, 2012 ; Retrieved April 14, 2012 .
- ↑ LBEG determined. Accident at the Sigmundshall potash plant. April 5, 2012, Retrieved April 8, 2012 .