The group's pig iron, crude steel and rolling mill basis is strengthened in 1896 by the establishment of an iron and steel works in Rheinhausen, which in 1904 is given the name Friedrich-Alfred-Hütte. The adoption of the Thomas process leads to a significant increase in steel production. To secure the phosphorus-bearing iron ores needed for this process, Krupp acquires various ore mines in Lorraine in 1889 and 1894 and near Gelnhausen on the River Lahn in 1906/07. In 1907 a workshop is set up in the Friedrich-Alfred-Hütte mill for structural steel engineering and bridge building, which in 1941 is made into an independent company Fried. Krupp Stahlbau Rheinhausen. In the years 1982 to 1993 the phased closure of the Rheinhausen plant is implemented.
