On 3 July 1944, Oberkommando West gave permission to stop construction at both sites, which had been so disrupted by bombing that work could no longer proceed. Three days later an Allied raid succeeded in wrecking the interior of the Watten bunker with a Tallboy bomb that brought down part of the roof. Finally, on 18 July 1944, Hitler decreed that plans for launching missiles from bunkers need no longer be pursued. Dornberger's staff subsequently decided to continue minor construction at Watten "for deception purposes". The site itself was now useless, as the Germans recognised when they wryly codenamed it "Concrete Lump", and the liquid oxygen generators and machinery were transferred to the Mittelwerk V-2 factory in central Germany, well away from Allied bombers.