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.
1939
1977
2019
1984
2023
1974
2021
1909
2017
1964
2018
2012
2022
2011
2015
1970
1955
2009