Related Clues:

• Mine car contents
• Assayer's studies
• Valuable rock
• Mine deposits
• Underground deposits
• Unrefined finds
• Rock with potential
• What some seams are made of
• Borax and bauxite, e.g.
• Lucky strikes?
• It may pan out
• Miner's bonanza
• Galena or mispickel
• Hematite, e.g.
• German preposition