Related Clues:

• Implosion material
• Boomsticks?
• Hit for 1-Across
• Blowup source, perhaps
• Quarry compound
• Cause of smithereens, maybe
• Block buster?
• Blaster's stuff
• It blasts
• Palindromic exploder
• Demolition compound
• The great leveler
• Cause of a big blowup?
• Loud outburst
• Tunnel-drilling need