Related Clues:

• Mine output
• Vein treasure
• Mine yield
• Igneous rock, in time
• It can be picked out
• Cal. neighbor
• Smelted stuff
• Gold digger's aim
• Unrefined metal
• It passes through adits
• Rocky riches
• It's mined and refined
• Raw rock
• Seam material
• Bucket conveyor's load