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Related Clues:
- Vein stuff
- Galena and hematite, e.g.
- Metal-bearers
- Blast furnace input
- Crunch targets
- Miner profits?
- They're found in pockets and seams
- Pitchblende and bauxite
- Subjects of assays
- Unrefined metals
- Mining take
- Ones in need of refinement
- They may be driven to extraction
- Refinement targets
- Iron and copper, e.g.