Related Clues:
- Mine extraction
- Comstock __: Nevada silver deposit
- Mine vein
- Mine bonanza
- Ore jackpot
- It may have gold in them thar hills
- Vein running through Tiepolo design
- Vein of gold in a mine
- Prospector's windfall
- Underground band?
- Significant source
- Source discovered finally to be different
- Set of type
- Source; set of type of one size
- Rich source contributes line to poem