| Clue | Source | Date |
|---|---|---|
| Sources of unending wealth, figuratively: 2 wds. | ||
| You might be losing it in the Med but you'll make your fortune here | ||
| Big moneymakers | ||
| Bio moneymakers | ||
| Sources of valuable metal | Universal | 01 Dec 2020 |
| Profitable ventures | Wall Street Journal | 19 Jul 2018 |
| Profitable ventures | ||
| Places with valuable veins | ||
| Places with valuable veins | ||
| Bonanzas | ||
| Bonanzas | ||
| Cripple Creek's key to wealth. | ||
| Homestake and others. |