Collapse persistence
| Collapse persistence | |||
|---|---|---|---|
| General information about the mine | |||
| Mining technology | Civil engineering | ||
| Funding / year | 2065 (1925) t | ||
| Funding / total | ~ 3000 t Wealden coal | ||
| Information about the mining company | |||
| Operating company | Union perseverance | ||
| Employees | 19 (1911) | ||
| Start of operation | 1911 | ||
| End of operation | 1925 | ||
| Funded raw materials | |||
| Degradation of | Wealdenkohle | ||
| Geographical location | |||
| Coordinates | 52 ° 21 '58.9 " N , 8 ° 18' 27" E | ||
|
|||
| Location | Herringhausen | ||
| local community | Booed | ||
| country | State of Lower Saxony | ||
| Country | Germany | ||
The persistence colliery is a former mine on Wealdenkohle in Bohmte , district of Osnabrück .
geology
The layers of the Wealden come to the surface in the Wiehengebirge foothills around Bohmte and Schwagstorf, similar to those south of Osnabrück. Under the hilltop town of Bohmte four with 10% to the north were incident coal seams found. The seams consisted entirely of anthracite coal with a calorific value of 8 kWh / kg and 4.2 to 10% volatile components. It is assumed that the heat effect of the near Bramscher Massive one coalification caused because these coals are geologically very young.
| seam | Mightiness |
|---|---|
| 1 | 45-50 cm |
| 2 | 25-47 cm |
| 3 | 26 cm |
| 4th | 30-47 cm |
history
On January 2, 1875, the coal field Persistence in the later Bohmter district of Herringhausen was awarded. After years of inactivity , on July 10, 1905, Deutsche Erdölbohrgesellschaft Dortmund GmbH secured the exploration rights for this coal field in order to economically examine a possible mining. From 1907, the Perseverance Union was registered as the owner of the Perseverance mine, which on June 12, 1911 also secured the rights to the neighboring field Caroline. Mining was already going on here until 1875.
In the years 1905/06, boreholes were drilled which confirmed the seams and based on which the reserves were calculated at 10.8 million tons. The union then decided to build a civil engineering plant with a capacity of 400 tons per day. With a workforce of eight people below and eleven above ground , the sinking work on the shaft began in July 1911 .
The shaft system was laid out 600 meters north of the Bohmter train station and, in addition to the shaft, also included the machine and boiler house, forge, magazine and a bucket . With a diameter of 3.5 meters, the final depth of the production shaft was reached after 104 meters. Since the seams did not reach the desired thickness and the First World War prevented further expansion, operations were initially suspended.
From 1918
As early as 1918, the first plans to overcome the colliery were forged, which were then carried out from 1920. The coal shortage that began as a result of the First World War spurred the fuel business very strongly, which is why the remaining work was completed quickly. Among other things, a 34-meter-deep weather shaft was sunk, the shaft sumped and the daytime facilities completed.
In 1921 the number of Kuxe was increased from 100 to 1000 Kuxe. In addition to Carl Deilmann and Tiefbohr AG, banks and private individuals were also involved in the mine. From 1923, the company was managed by Montania AG für Bergbau in Münster .
A 1500 m³ pump sump was created underground, which could be sumped by centrifugal pumps with a capacity of 1.5 and 2 m³ / min. The temporary wooden headframe was replaced by a 21 meter high headframe made of steel. In 1924 the shaft was equipped with a steam hoisting machine . Shortly before the mine was shut down, a coal washing plant with nut coal processing was completed in 1925 .
The production remained very modest during the operation of the mine. It reached 240 t in 1921 and could only be increased to 2065 t by 1923, which limited the profitability of the mine. On July 26, 1924, the colliery came to an end, as no loans were granted for further expansion. Although operations were resumed from November 18 to April 1925, when wages could no longer be paid, operations had to be shut down for good. In particular, the change in currency at the end of inflation is said to have contributed to the collapse of the colliery, as liquidity was lost.
After the closure
In 1934, the resumption of production was planned as part of the self-sufficiency drive. 120,000 tons should be extracted annually. It was not put into operation again, however, as the costs for expanding the mine were viewed as too high.
Likewise, in the early 1950s, a recommissioning contemplated by the subsequent owners of the systems was rejected.
The site lay fallow until the headframe was demolished in 1954 and the chimney was blown up on March 8, 1956. During residual explosions on the buildings to be demolished, the 78-year-old demolition expert was fatally injured in the head by flying stones. The mine dump was cleared in 1979.
Around 10 million tons of anthracite coal are still stored at a shallow depth below Bohmte, which is why the deposit is still receiving attention in the specialist literature despite its small seam thickness.
See also
literature
- Hans Röhrs : ore and coal . Mining and ironworks between Ems and Weser. Ibbenbürener Vereinsdruckerei (IVD), Ibbenbüren 1992, ISBN 3-921290-62-7 .
Individual evidence
- ^ Wolfgang Huge: Mining in the Wittlager country. In: The Wittlager Land: Stories from its history. P. 78 , accessed November 25, 2013 (Google Books).
Web links
- Achim Eberhard: 1.4 Bohmte. In: Osnabrücker Bergland - Overview of the mining and metallurgical industry. Mine Archaeological Society, accessed November 25, 2013 .