Related Clues:

• Miner's discoveries
• Metal-in-the-rough
• Nickel in a pocket?
• Lode stones
• Bauxite and borax
• Mined stuff
• Tramcar filler
• Danish currency
• Mineral that contains metal
• Digger's find
• Metallurgist's materials
• It's unsmelted
• Unwrought iron?
• Sources of silver
• Dig this!