Mittelwerk GmbH also headed sites for V-2 rocket development and testing at Schlier (Project Zement) and Lehesten. Beginning in May 1944, Georg Rickhey was the Mittelwerk general manager, Albin Sawatzki was the Mittelwerk technical director over both Arthur Rudolph's Technical Division (with deputy Karl Seidenstuecker) and Hans Lindenberg's 50 engineers of the quality control group located at Ilfeld.
Mittelwerk GmbH oversaw sites for V-2 rocket development and testing at Schlier (Project Zement) and Lehesten. Georg Rickhey became the Mittelwerk general manager in May 1944, while Albin Sawatzki served as the technical director, managing both Arthur Rudolph's Technical Division (with deputy Karl Seidenstuecker) and Hans Lindenberg's quality control group at Ilfeld.