Typescript transcript of interview with Dr Norris Edwin Bradbury, Director, Los Alamos Scientific Laboratory, New Mexico, USA, 1945-1970, relating to the difficulty in retaining US atomic scientists at the Los Alamos National Laboratory, New Mexico, USA, following the Japanese surrender, Sep 1945; Operation CROSSROADS, the two US nuclear tests, Bikini Atoll, Marshall Islands, Pacific Ocean, Jun-Jul 1946; the military requirements for US nuclear weapons, 1947-1948; the Atomic Energy Commission (AEC), 1947-1948; Operation SANDSTONE, the three US atomic bomb tests, Eniwetok Atoll, Marshall Islands, Pacific Ocean, Apr-May 1948; the detonation of the first Soviet atomic bomb, Semipalatinsk, Kazakhstan, USSR, Aug 1949; US development of thermonuclear weapons (hydrogen bombs), 1949-1952; the importance of Professor Edward Teller in the US thermonuclear development programme, 1949-1952; the opposition by Dr J(ulius) Robert Oppenheimer, to the US development of thermonuclear weapons (hydrogen bombs) 1948-1952; the arrest of Dr Klaus Emil Julius Fuchs, a nuclear physicist, for passing atomic secrets to the USSR, 1950; Operation GREENHOUSE, the four US nuclear tests, Eniwetok Atoll, Marshall Islands, Pacific Ocean, Apr-May 1951.