As with the move of the V-2 Production Works to the Mittelwerk, the complete withdrawal of the development of guided missiles was approved by the Army and SS in October 1943. On August 26, 1943, at a meeting in Albert Speer's office, Hans Kammler suggested moving the A-4 Development Works to a proposed underground site in Austria. After a site survey in September by Papa Riedel and Schubert, Kammler chose the code name Zement (cement) for it in December, and work to blast a cavern into a cliff in Ebensee near Lake Traunsee commenced in January 1944.: To build the tunnels, a concentration camp (a sub unit of Mauthausen-Gusen) was erected in the vicinity of the planned production sites. In early 1944, construction work started for the test stands and launching pads in the Austrian Alps (code name Salamander), with target areas planned for the Tatra Mountains, the Arlberg range, and the area of the Ortler mountain. Other evacuation locations included: