Related Clues:

• 'Portlandia' state: Abbr
• Calcite for example
• Mineral in the raw
• Bauxite, e.g
• Matter of miner concern
• Precious metal source
• Source of iron, e.g
• Mining extract
• Makeup of some seams
• Foundry delivery
• Magnetite, e.g
• Cinnabar or galena
• Rocks with metal
• It's all in your mine
• Mine layer