Related Clues:

• Unrefined lode
• Stuff in a seam
• Shaft discovery
• Like some e_cuses
• Pointedly unimpressive
• It may be all in the mine?
• Deposit worth digging up
• Rock to refine
• Chalcopyrite, e.g.
• Pretty feeble
• Miner's rock
• Part of the underground economy?
• Foundry need
• Flin Flon commodity
• Needing a cane