Kokerei Zollverein was built between 1957 and 1961.It was one of the world’s biggest coking plants (8,500 tonnes of coke per day). The coking plant was closed in 1993 and the demolition was imminent. The coking plant was saved thanks to the efforts of the Foundation for the Conservation of Industrial Monuments and Historical Culture).
Link:
http://www.erih.net/nc/anchor-points/detail.html?user_erihobjects_pi2%5BshowUid%5D=15343
http://opacity.us/site182_kokerei_zollverein.htm
http://www.lomography.it/magazine/45470-kokerei-zollverein
http://whc.unesco.org/en/list/975
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