Related Clues:

• Riches from ditches
• Smelter input
• Auto's tankful
• Mine diggings
• Where Salem is: Abbr.
• Nev. neighbor
• Heating choice
• See 9-Down
• It's pursued in vein
• See 63-Across
• It may be picked
• See 16-Down
• Miner's quarry
• Source of iron
• It may have a silver lining