Presentation of the economic upswing in the GDR, emphasizing the discovery of the process for the production of high-temperature lignite coke and the commissioning of the Lauchhammer large-scale coking plant.
1964
1968
1971
2009
1965
2012
1992
1989
2023
2021
1955
1977
2019
1937
1958
1956
1970
2017