 In April 1946 , the Prime Minister , Ben Chifley , asked Oliphant if he would be a technical advisor to the Australian delegation to the newly formed United Nations Atomic Energy Commission ( UNAEC ) , which was debating international control of nuclear weapons . Oliphant agreed , and joined the Minister for External Affairs , H. V. Evatt and the Australian Representative at the United Nations , Paul Hasluck , to hear the Baruch Plan . The attempt at international control was unsuccessful , and no agreement was reached . 
