Stone Mining III
Description
Accelerates Stone Gathering
Requirements
| Level | Prerequisites | Research Cost | Time | Bonus | Power |
|---|---|---|---|---|---|
| 1 |
Research Center 21 Iron Output III 1 |
 320 000  320 000  64 000  16 000  3 600 |
01:10:00 |
Stone Gathering Speed: 13.50% |
1687 |
| 2 |
Research Center 22 |
450 000 450 000 90 000 22 000 5 000 |
01:45:00 |
Stone Gathering Speed: 13.50% |
1688 |
| 3 |
Research Center 23 |
970 000 970 000 190 000 48 000 10 000 |
04:40:00 |
Stone Gathering Speed: 18.00% |
2250 |
