Related Clues:

• Smokestack emission
• Light hair color
• Volcanic dust
• Locomotive fuel
• Hibachi residue
• Silvery gray
• It may be cast in a flick?
• Shade of gray
• Pinatubo product
• Silvery-gray
• Barbecue residue
• Fuel source
• It may be gone in a flick
• Wood used for tool handles
• Type of tree