Description
Enhances Coal Output at Coal Mine
Coal Output III
Requirements
| Level | Prerequisites | Research Cost | Time | Bonus | Power |
|---|---|---|---|---|---|
| 1 |
Research Center 18 Iron Mining II 1 |
 430 000  430 000  86 000  21 000  4 800 |
01:40:00 |
Coal Output: 7.00% |
1820 |
| 2 |
Research Center 19 |
600 000 600 000 120 000 30 000 6 700 |
02:30:00 |
Coal Output: 6.50% |
1690 |
| 3 |
Research Center 20 |
1 200 000 1 200 000 250 000 64 000 14 000 |
06:40:00 |
Coal Output: 9.00% |
2340 |
