Related Clues:
- Arms race event, briefly
- Explosive trial of the '50s
- Explosive trial in the 1950s news
- Thermonuclear experiment of the '50s
- Giant cloud producer of the '50s
- Explosive experiment, informally
- 1945 demo at Alamogordo
- Nuclear trial, for short
- It's quite a blast
- Manhattan Project trial, briefly
- Engage in __ of strength
- Undergo __ of endurance
- Trial blast
- Nuclear trial, briefly
- Unnerving boom, of sorts