§ Mr. Masonasked the Minister of Defence at what distance an atomic bomb explosion similar to the ones exploded at Hiroshima and Nagasaki can be detected with the aid of barometers, seismographs and geiger counters in use in this country.
§ Mr. Selwyn LloydIt would not be in the public interest to disclose any details of our methods of detection or of the apparatus which we use.