Ventilation

Underground mine ventilation provides a flow of air to the underground workings of a mine of sufficient volume to dilute and remove noxious gases.

Name	Costs
Ventilation	3200 2500 2500 400	0	03d19h40m

Ability
Provides	Requires
+15% Resource production workforce - Iron Ventilation improvement	Building is Large Iron Mine User has Ventilation technology

Buildings to improve
Name	Construction Costs			Culture Points	Trade Points
Large Iron Mine	4200 3300 1700	0	07d15h20m	8	4

Ventilation techtree