The Alsos Mission had learned that the uranium ores that had been taken from Belgium in 1944 had been shipped to the '' Wirtschaftliche Forschungsgesellschaft '' ( WiFO ) plant in Staßfurt . The 83rd Infantry Division captured this on 15 April . As it was in the occupation zone allocated to the Soviet Union at the Yalta Conference , the Alsos Mission , led by Pash and accompanied by Lansdale , Perrin and Air Commodore Sir Charles Hambro , arrived on 17 April to remove anything of interest . Over the following ten days , 260 truckloads of uranium ore , sodium uranate and ferrouranium weighing about 1,000 tons , were taken away by an African-American truck company . The uranium was taken to Hildesheim and most of it was flown to the United Kingdom by the Royal Air Force ; the rest had to be moved to Antwerp by train and loaded onto a ship to England
Yalta Conference
Yalta Conference
Alsos Mission