' yr Los the primary ~- Fee exaggerated, Another advantage of U-233,ppinted out by Dr. Fine, was that 4% _ Further advantages were”seen to be the lower toxieity of U-233 (Dr. Libby), and the related technological and fabrication advantages (Dr. Schreiber), | es : Dr. Rabi asked if the program would interfere with tritium produc=Interaction yith Lritiua Produc~ tion tion in case a requirement for that material came along. Dr. Hall said that tritium is made on the excess reactivity, that ens: tritim will be available in FY 55, and that this rises toivear. Mr. Quinn said that the changeover to thorium does not affect the tritium picture as it is now understood, wee st