Following the bombing of Peenemünde by the RAF in August, 1943 the entire V-weapons program was relocated by the German government to the Nordhausen-area of central Germany. This transition included much of the former staff of Peenemünde, Busta among them. Production of the V-2's was reestablished at Mittelwerk, a massive armaments facility housed in an elaborate tunnel system in the Kohnstein. Here again, slave-labor was utilized to assemble the rockets. The tunnels at Mittelwerk were staffed by thousands of prisoner-laborers drawn from the inmate population of the nearby Mittelbau-Dora concentration camp. Their work was overseen by both German civilian contractors and the SS.