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 controlled sites for V-2 rocket development and testing at Schlier (Project Zement) and Lehesten. Georg Rickhey assumed the role of Mittelwerk general manager in May 1944, while Albin Sawatzki was responsible for technical direction over Arthur Rudolph's Technical Division (with deputy Karl Seidenstuecker) and Hans Lindenberg's quality control group at Ilfeld.