Related Clues:

• Miner's quest
• Lead ___
• Bauxite, e.g.
• Subject of testing
• Mettle
• Resolve
• Zoomed
• Hematite, for one
• Bauxite or magnetite
• It might be picked apart
• Smeltery supply
• Valuable find
• Underground deposit
• FedEx competitor
• Manet's ''Luncheon on the ---''