Related Clues:

• Lousy stocking filler
• Snowman's eye material
• Old furnace fuel
• Frosty's eye
• Anthracite, e.g.
• Fuel that's shoveled
• Type of fuel
• Lignite or anthracite
• Snowman's eyes
• It's found in seams
• Furnace fodder, perhaps
• Furnace fuel, sometimes
• Brat's stocking stuffer?
• Type of mine
• Mined stuff