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Tronstad obliges by responding the same evening. (The year, given here as 1943, is a transcriber's error.) Fearing the worst—that even such uneven stocks of heavy water could help the Nazis create an A-bomb—the Allied High Command decides that the probable loss of Norwegian lives from the explosion aboard the ferry and by drowning in the freezing water of Lake Tinn, as well as through Nazi reprisals, is regrettable but necessary.