Related Clues:
- Cold War activities
- Blasts of the past
- Matters of intl. concern
- Nuclear trials
- Nuclear experiments
- Big blasts, informally
- Blasts from the past
- Big blasts
- Big blasts, for short
- Bikini explosions
- Events registered by seismometers, in brief
- Blasts from the past, briefly
- Bikini trials, briefly
- Arms control subj.
- Powerful experiments