THE report on Scientific and Technical Aspects of the Control of Atomic Energy, which has been issued by the Scientific and Technical Committee of the Atomic Lnergy Commission*, is in some ways rather disappointing. Ignoring the possibilities of disiftfcuting distributing denetured atomic fuel discussed by the Lilienthal Board, the report merely concludes that there is an intimate relation between the activities required for peaceful purposes and those leading to the production of atomic weapons; most of the stages which are needed for the former are also needed for the latter. Safeguards are not regarded as too difficult for the mining operations which are of special significance as the first step in these activities. Particular attention should be paid to the installations in which concentrated nuclear fuel is produced, since the product lends itself immediately to the production of bombs. Unless appropriate safeguards are taken at each of these stages, it will be difficult to ensure that no diversion of material or installation takes place.