Redl-Zipf

Construction of the facility was under the command of SS-Obergruppenführer Hans Kammler who was responsible for Nazi civil engineering projects and its top secret weapons programs and used forced labor from the Schlier-Redl-Zipf[1]: 207  subcamp of the Mauthausen-Gusen concentration camp.

[2] A large explosion on February 29, 1944, killed 14 people, destroyed several installations, and halted production of liquid oxygen at the facility for almost two months.

A report to Albert Speer indicated the cause of the explosion was a liquid oxygen leak and an open carbide lamp carried by the plant foreman.

After the August 1944[3] explosion, liquid oxygen production at the Schlier plant stopped once again which led to the establishment of a third V-2 liquid oxygen plant (5000 tons/month)[4] at a slate quarry at Lehesten[1] near the Mittelwerk (turbopump/chamber compatibility testing for Mittelwerk production was also performed at the Lehesten facility).

[4] Karl Heimberg, who had worked at Peenemünde Test Stand 7, was transferred to "Vorwerk Süd" at Redl-Zipf and then, for the period from late 1944 to early April 1945, to Lehesten (he later returned to Peenemünde with Walter Riedel III to burn design office files and participated in the post-war Operation Backfire).