Related Clues:

• Smeltery supply
• Valuable find
• Crankcase contents
• Heat source
• Underground deposit
• Pitchblende, e.g.
• Scandinavian currency
• Danish coins
• You may want to get a lode of this
• Certain cartel's concern
• Rock deposit
• Metal-bearing mineral
• See 65-Across
• Well-supplied resource?
• Smelter's supply