Related Clues:

• 1952 Eniwetok event
• Bomb trial
• Mushroom cloud maker
• Explosive trial
• Bikini blast, briefly
• 'This is only ___'
• 'This is only --'
• Blast from the past?
• 'This is ___ …' (radio announcement)
• Treaty topic
• "This is __"
• Controversial 50's event
• ''This is only ___''
• "This is only __"
• ''This is only ___!''