Related Clues:

• Metallurgists' studies
• Locale of riches
• Mine find
• Bonanza find
• Sourdough's find
• Treasure-trove
• Comstock, for one
• Ore store
• Rough voice, metaphorically
• Cinnabar, taconite, etc.
• Metallurgist's stock
• They're found in prospectors' sectors
• Mined metals
• Mesabi Range yield
• Loads from lodes