German expert in guided missiles during World War II. On 17 May 1946 a location in the forest on the plateau of Vernon was chosen as the site for the Laboratory for Ballistic and Aerodynamic Research (LRBA). Here German specialists would be brought to assist France in development of a ballistic missile. Herbert Weiss had worked at Cuxhaven, and returned to Emmendingen thereafter. He talked to other German engineers about French rocket plans, including Jauernick and Habermann. It was agreed to send Doctor Graf to Paris in May 1946 to negotiate contracts between the scientists and the French government. By 15 May 1946 35 Peenemuende veterans at Cuxhaven had signed contracts with the French. Until the facility at Vernon could be completed, the French organised the German engineers in two groups. The Emmendingen Research Office was organised with Jauernick as Head of the Engine Group, and Otto Mueller in charge of the Guidance Group. Another 12 engineers were organised at Puteaux outside Paris. As of January 1947, Americans still knew Mueller's address only as "c/o Klinger", British Zone. Between March and May 1947 all of these engineers, by then around 90 in number, were moved to the new LRBA facilities at Vernon. The group had already been completing preliminary design work on a 40 tonne thrust hypergolic engine for the Super V-2. Mueller worked in France as head of the guidance division of LRBA from 1947-1952.