Related Clues:

• Rock for miners
• What to take the lead from
• Clothes closure
• Stitches on a baseball
• Rock bands, possibly?
• Miner's goal
• Mine extraction
• Stocking feature
• Unrefined material
• Valuable stuff in a vein
• Line in a mine
• Baseball part
• Seam valuable
• Certain extraction
• Millerite, e.g