Related Clues:

• Mined over matter?
• It's lode-bearing
• It may lie in a bed
• Lead or copper, e.g.
• Graded material
• A miner offering?
• ...this is found
• Naughty child's Christmas gift
• Homophone of 12-Down
• Metal in a mountain
• Garnierite, for nickel
• Miner concern
• Sharable PC file
• Smeltery delivery
• A lode off one's mine?