Research upgradeImproved Steel Tools
+ 100% iron production (Equipment Multiplier)
Research data
- Research branch
- Iron mine
- Unlock requirement
- Iron mine level 5 · Blacksmith level 5
- Cost rank
- 19
- Wood cost
- 45,000
- Food cost
- 45,000
- Gold cost
- 18,000
- Iron cost
- 72,000
- Effect
- + 100% iron production (Equipment Multiplier)
Related game data
Research branch 1
Research cost 4
