Related Clues:

• ". . . ___, dust to dust"
• Neon and argon
• Krypton and others
• Grate collection
• Briquette residue
• Old flames?
• Incinerator product
• Word repeated in 'Ring Around the Rosie'
• Word repeated in "Ring Around the Rosie"
• Fireplace debris
• Rightmost column in the periodic table
• Bonfire remains
• Reminder of an old flame?
• Remains of the tray?
• Volcanic matter