Related Clues:
- It's targeted for extraction
- Stuff in many 57-Across
- Rocks for a refinery
- Buried treasure?
- Rock worth unearthing
- War hazard
- Celestite, e.g
- Hog's word?
- Money is never enough from tips - it's all I have
- Where to go for the gold
- Nickel source, e.g
- Resource in the board game The Settlers of Catan
- Many a substance ending in '-ite'
- It gets the shaft
- Toddler's assertion