Related Clues:

• It may be volcanic
• Dirty coat
• Chimney sweep's coating
• It comes before Wednesday once a year
• Chimney grime
• ''... to ---, dust to dust''
• *Sweep ... coal ... Santa
• Fire proof?
• Corona's end
• Shade of blonde
• Stuff of bats
• It comes from the hearth
• Volcanic output
• Contents of a BBQ pit, often
• Pale gray