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This film treasure from 2003 shows how a coking plant produces coke from coal, which is needed to produce liquid pig iron. The footage shows the everyday working life of a Thyssen coking plant in Duisburg and a coking plant that opened in Duisburg-Schwelgern in 2003. The film takes us out of Westphalia, but similar coke batteries were also in operation in Westphalia - for example the Henrichshütte in Hattingen. In the "Film Treasures" series, we publish selected documentaries, short and amateur films from past decades in full length on YouTube. A characteristic of the film selection is that the "Film Treasures" focus on topics from Westphalia, look at them from the time they were created and convey a certain period color. You can find more film treasures here: • Film Treasures