Zollverein Coal Mine Industrial Complex

Zollverein Coal Mine Industrial Complex

Infobox World Heritage Site
Name = Zollverein Coal Mine Industrial Complex in Essen

State Party = GER
Type = Cultural
Criteria = II. - III.
ID = 975
Region = Europe and North America
Year = 2001
Session = 25th
Link = http://whc.unesco.org/en/list/975

The Zollverein Coal Mine Industrial Complex is a large former industrial site in the city of Essen, North Rhine-Westphalia, Germany. It has been inscribed into the UNESCO list of World Heritage Sites since December 14, 2001 and is one of the anchor points of the European Route of Industrial Heritage.

The first coal mine on the premises was founded in 1847, mining activities took place from 1851 until December 23, 1986. For decades starting in the late 1950s, the two parts of the site, "Zollverein Coal Mine" and "Zollverein Coking Plant" (erected 19571961, closed on June 30, 1993), ranked among the largest of their kinds in Europe. Shaft 12, built in Bauhaus style, was opened in 1932 and is considered an architectural and technical masterpiece and earned reputation as the “most beautiful coal mine in the world” [ [http://en.erih.net/index.php?anchor=66&pageId=40 European Route of Industrial Heritage] ] .



Zollverein Coal Mine was founded by Duisburg-born industrialist Franz Haniel (1779-1868), who needed coke for steel production. Test drillings in the "Katernberg" region (nowadays a suburb of Essen) had disclosed a very rich layer of coal, which was then named after the German Customs Union "(Zollverein)" founded in 1834. In 1847, Haniel founded the "bergrechtliche Gewerkschaft Zollverein" (a special kind of Prussian corporation for the exploitation of natural resources) and distributed the shares of the new company amongst the members of his family and the landowner of the to-be Zollverein territory.

Sinking of shaft 1 began on February 18, 1847, with the first mineral coal layer being found 130 meters under the surface. First mining activities took in 1851. Shaft 2 (sunk simultaneously with shaft 1) was opened in 1852. Both shafts featured visually identical stone towers and shared a machine house. This concept was to be adapted by many later twin-shaft coal mines.

Starting in 1857, charcoal piles were used to produce coke. In 1866, the piles were replaced by a modern cokery and machine ovens.

In 1880, sinking of another shaft 3 began in neighboring "Schonnebeck". It received a steel framework as its winding tower and was opened in 1883. By 1890, the three shafts already had an output of 1 million tons, placing Zollverein on top of all German mines.


Since the coal, iron and steel industries of the Ruhr area flourished in the late 19th / early 20th centuries, the mine was heavily extended.

Between 1891 and 1896, the twin-shafts 4/5 were built on the border to "Heßler" (nowadays a suburb of Gelsenkirchen). The two shafts received special shafts for extraction of coal, transportation of the "Kumpel"s (mine workers) and ventilation, as well as a new cokery. Another shaft 6 was opened in 1897.

By 1897, Zollverein had for years been suffering under mine accidents due to firedamps caused by ventilation problems. To resolve these problems, additional maily ventilation-only shafts were opened near the already existing ones: In 1899, shaft 7 was opened near shaft 3, shaft 8 near shafts 1/2 (1900), and shaft 9 near shaft 6 (1905).

What followed were years of continuous renovation and further expansion. After the construction of shafts 7, 8 and 9, the old shafts 1/2 (including the cokery) were renovated, even one of the twin towers was taken down and replaced by a modern steel framework. In 1914, shaft 10 and a new cokery were opened, as was shaft 9 (which had only since served as a ventilation shaft).

By the eve of the First World War, Zollverein's output had risen to approx. 2.5 million tons.

1918 - 1932

In 1920, the Haniel family, who had been the owners of Zollverein until then, started cooperating with "Phönix AG", a mining company that subsequently took over the management of the site. Under Phönix' management, several of the shafts were again modernized, and a 11th shaft was opened until 1927. When Phönix merged into "Vereinigte Stahlwerke" in 1926, Zollverein came under control of "Gelsenkirchener Berkwerks-AG (GBAG)" who started closing most of the meanwhile elderly coking plants.

haft 12

In 1928, the GBAG voted for the construction of a totally new 12th shaft designed as a central mining facility. When in the shaft opened in 1932, it had a daily output of up to 12.000 tons, combining the output of the four other existing facilities with 11 shafts.

"Schacht Albert Vögler", as the highly modern shaft was named after the director general of the GBAG, was designed by the architects "Fritz Schupp" and "Martin Kremmer" and quickly gained notice for it's simple, functional Bauhaus design with its mainly cubical buildings made of reinforced concrete and steel trusses. The shaft's characteristic Doppelbock winding tower in the following years did not only become the archetype of many later central mining facilities but became a symbol of the German heavy industry. Whilst this symbol may have slowly been forgotten when the German heavy industry started diminishing in the second half of the 20th century, it was this shaft and especially it's characteristic winding tower that were to become a symbol of the Ruhr area's structural change.

1932 - 1968

In 1937, Zollverein employed 6.900 people and had an output of 3.6 million tons, the majority to which contributed the new 12th shaft. The other shafts were not entirely closed and even received new (in comparison to shaft 12 of course far inferior) winding towers, such as did shaft 6. On the premises of the old coking plant of shafts 1/2/8, a small facility of 54 new ovens was opened with a yearly output of 200.000 tons of coke.

Zollverein survived the Second World War with only minor damages and by 1953 again placed on top of all German mines with an output of 2.4 million tons. In 1958, shaft 1 was replaced by a totally new building; the complete reconstruction of the 2/8/11 shaft facility from 1960 until 1964 was again planned by Fritz Schupp. These renovations however, were only to last until 1967, when 11 shafts were closed, leaving shaft 12 the only open one.

Shaft 12 thus became the main supplier of the new central coking plant from 1961 with its 192 ovens, which was again designed by Fritz Schupp [ [http://www.industriedenkmal-stiftung.de/docs/9977874944135_de.php Industriedenkmal-Stiftung | Denkmale | Kokerei Zollverein | Geschichte ] ] . After an expansion in the early 1970s, Zollverein placed among the most productive coking plants worldwide with around 1.000 workers and an output of up to 8.600 tons of coke a day on the so-called "dark side". The "white side" of the plant produced side products such as ammonia, raw benzene and raw tar.

In 1968, Zollverein was handed over to Ruhrkohle AG (RAG), Germany's largest mining company.

1968 - 1993

RAG began a further mechanization and consolidation of the mining activities. In 1974, Zollverein was joined with into a "Verbundberkwerk (joined mines)" with nearby "Bonifacius" and "Holland" coal mines in "Kray" and Gelsenkirchen, respectively. In 1982, Gelsenkirchen's "Nordstern" coal mine also joined that Verbund.

The "Flöz Sonnenschein" coal layer in the north of the Zollverein territory was the last layer that mining activities took place in on Zollverein territory, starting in 1980. The output of "Verbundbergwerk Nordstern-Zollverein" was approximately 3.2 million tons, which however did not prove profitable enough so that a complete closure of the Zollverein site was voted for in 1983.

When it closed, Zollverein was the last remaining active coal mine in Essen. Whereas the coking plant remained open until June 30, 1993, mining activities in shaft 12 stopped on December 23, 1986. Although it is the central shaft of the Cultural Heritage site, shaft 12 cannot be visited as it continues being used as the water drainage for the central Ruhr area together with shaft 2.

Becoming a monument

As with most sites of the heavy industries that had been closed down, Zollverein was predicted to face a period of decay. Surprisingly, the state of North Rhine-Westphalia (NRW) bought the coal mine territory from the RAG right after it had been closed down in late 1986 and declared shaft 12 a memorial. This went along with the obligation to preserve the site in its original state and to minimize the effects weathering. In 1989, the city of Essen and NRW founded the "Bauhütte Zollverein Schacht XII" that should take care for the site and which was replaced by the "Stiftung Zollverein (Zollverein Foundation)" in 1998.

After it had been closed down in 1993, the coking plant was planned to be sold to China. The negotiations failed and it was subsequently threatened to be demolished. However, another project of the state of NRW set the coal mine on a list of future exhibition sites resulting in first gentle modifications and the cokery also became an official memorial in 2000.

On its 25th session in December 2001, the United Nations Educational, Scientific and Cultural Organization (UNESCO) declared both the sites of the shafts 12 and 1/2 and the cokery a World Heritage Site.


*Most sections of this article are translations from the German Wikipedia. The versions used can be found under the following links: [http://de.wikipedia.org/w/index.php?title=Zeche_Zollverein&oldid=36562945] , [http://de.wikipedia.org/w/index.php?title=Zeche_Zollverein&oldid=37116619] and [http://de.wikipedia.org/w/index.php?title=Zeche_Zollverein&oldid=43526023] . The original authors of the German language version can be found [http://de.wikipedia.org/w/index.php?title=Zeche_Zollverein&action=history here] .


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