Description
Enhances Coal Output at Coal Mine
Coal Output II
Requirements
| Level | Prerequisites | Research Cost | Time | Bonus | Power |
|---|---|---|---|---|---|
| 1 |
Research Center 13 Iron Mining I 1 |
 130 000  130 000  27 000  6 700  1 600 |
00:25:00 |
Coal Output: 5.50% |
1430 |
| 2 |
Research Center 14 |
180 000 180 000 37 000 9 400 2 200 |
00:37:30 |
Coal Output: 5.50% |
1430 |
| 3 |
Research Center 15 |
400 000 400 000 81 000 20 000 4 800 |
01:40:00 |
Coal Output: 7.00% |
1820 |
