Related Clues:
- Source of scandium
- Result of a vein search?
- Mine car cargo
- Seamy stuff?
- Uranium source, e.g.
- For miners it's major
- It's totally unrefined
- Metal on its way to a refinery
- Metal in the raw
- Mine treasure
- Refiner's supply
- Gold container, perhaps
- Stuff to refine
- Subject of an assay test
- It might have a silver lining