Related Clues:

• Match makers
• Social groups
• Pitchblende and bauxite
• Subjects of assays
• Unrefined metals
• Mining take
• Ones in need of refinement
• Matched pieces
• They may be driven to extraction
• Refinement targets
• Some volleyball shots
• Iron and copper, e.g.
• Miner samples
• Mine output
• Arranges