The Zollverein Coal Mine Industrial Complex (German Zeche Zollverein) is a large former industrial site in the city of Essen, North Rhine-Westphalia, Germany. The first coal mine on the premises was founded in 1847, and 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 1957–1961, closed on June 30, 1993), ranked among the largest of their kinds in Europe. Shaft 12, built in the New Objectivity style, was opened in 1932 and is considered an architectural and technical masterpiece, earning it a reputation as the "most beautiful coal mine in the world".
Because of its architecture and testimony to the development of heavy industry in Europe, the industrial complex was inscribed on the UNESCO World Heritage List on December 14, 2001, and is one of the anchor points of the European Route of Industrial Heritage.
History
1847–1890
Zollverein Coal Mine was founded by Duisburg-born industrialist Franz Haniel (1779–1868), who needed coke for steel production. Test drilling in the Katernberg region had revealed a very rich seam of coal. In 1847, Haniel founded a company he named bergrechtliche Gewerkschaft Zollverein (Mining Law Labor Union Zollverein). There was a mining law (Bergrecht) in Prussia to encourage the exploitation of natural resources. The law called for the creation of a special form of corporation, designated a 'labour union' (Gewerkschaft) but in fact a capitalist company. Haniel named his after the German Customs Union (Zollverein), established in 1834. Haniel distributed the shares of the new company amongst the members of his family and the owner of the land on which the future mine would be constructed.
The sinking of Shaft 1 began on February 18, 1847, with the first coal layer being reached at a depth of 130 meters. The first mining activities started in 1851. Shaft 2, which was sunk at the same time as 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, these piles were replaced by a modern cokery and machine ovens.
In 1880, the sinking of another shaft, Shaft 3, began in neighboring Schonnebeck. It had a steel framework to support its winding tower and was opened in 1883. By 1890, the three shafts had already achieved an output of one million tons, making Zollverein the most productive of all German mines.
1890–1918
Since the coal, iron and steel industries of the Ruhr area flourished in the late 19th and early 20th centuries, the mine was extended significantly.
Between 1891 and 1896, the twin Shafts 4 and 5 were built on the edge of Heßler (nowadays a suburb of Gelsenkirchen). These each had special lifts for the extraction of coal, and the transportation of miners, and had ventilation ducts. Another shaft, number 6, was opened in 1897.
By 1897, Zollverein had long suffered from many mining accidents due to firedamp caused by ventilation problems. To resolve these problems, additional ventilation-only shafts, close to the existing mining shafts, were opened: in 1899 Shaft 7 was opened near Shaft 3, in 1900 Shaft 8 was opened near Shafts 1 and 2, and in 1905 Shaft 9 was opened near Shaft 6.
Years of continuous renovation and further expansion followed. After the construction of ventilation shafts 7, 8, and 9, the old Shafts 1 and 2, and their cokery, were renovated, and one of their twin towers was taken down and replaced by a modern steel framework. In 1914, Shaft 10 and a new cokery were opened, and Shaft 9 was converted from a ventilation shaft to a working shaft.
By the eve of the First World War, Zollverein's output had risen to approximately 2.5 million tons per year.
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's management, several of the shafts were again modernized, and an eleventh shaft was opened by 1927. When Phönix merged into Vereinigte Stahlwerke in 1926, Zollverein came under the control of Gelsenkirchener Bergwerks-AG (GBAG) which started closing most of the now elderly coking plants.
Shaft 12
In 1928, the GBAG voted for the construction of a totally new twelfth shaft designed as a central mining facility. When 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.