Enabled in build 0.80
+ 2 max iron workers
Research data
- Research branch
- Iron mine
- Unlock requirement
- Iron mine level 1 · Carpenter level 1
- Cost rank
- 8
- Wood cost
- 600
- Stone cost
- 400
- Food cost
- 600
- Iron cost
- 400
- Effect
- + 2 max iron workers
Improved Work Area I
+ 2 max iron workers