연구
Coal Mining II
CategoryEconomy
Queuemain
Tier2
Research levels
| Level | Effects | Prerequisites | Costs | Power | Time |
|---|---|---|---|---|---|
| 1 | Coal Gathering Speed 11% (11) | building: research-center 16；research: iron-output-ii 1 | Coal × 20000、Iron × 5000、Meat × 100000、Steel × 1200、Wood × 100000 | 1375 | 17m 30s |
| 2 | Coal Gathering Speed 11% (22) | building: research-center 17 | Coal × 28000、Iron × 7000、Meat × 140000、Steel × 1600、Wood × 140000 | 1375 | 26m 15s |
| 3 | Coal Gathering Speed 14.5% (36.5) | building: research-center 18 | Coal × 60000、Iron × 15000、Meat × 300000、Steel × 3600、Wood × 300000 | 1812 | 1h 10m |