Haukelid radioed London for permission, emphasizing that his engineer compatriots had questioned if the results were worth the reprisals: The fact that the Germans were using heavy water for atomic experiments, and that an atomic explosion might possibly be brought about, was a thing we now talked of openly. At Rjukan they doubted very much whether the Germans had come in sight of a solution. They also doubted whether an explosion of the kind could be brought about at all.1952 The British begged to differ: The answer came from London the same day:1953 “Matter has been considered. It is thought
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