Related Clues:

• Material in seams and pockets
• Some freighter cargo
• Argentite, vis-Г -vis silver
• Source of metal in western half of a Pacific state
• Beaver State: Abbr
• Mt. Hood locale
• Food for a smelter
• Trail terminus: Abbr
• Focus of some strikes
• Hematite, e.g
• Some slurry stuff
• What a seam may hold
• Rock worth mining
• Grist for some mills
• Miner issue