Mine Ventilation

Mine Ventilation is a form of Technology and Culture.

Description
Mining deep under the ground presents two main problems, how to remove ground water, and how to provide fresh air to the miners. Water can be removed with a chain pump, and air circulation can be achieved by using several carefully placed shafts. By this method it is possible to mine as far as 60 meters under the ground.

Effects

 * Enables construction of: Deep Copper Mine, Deep Gold Mine, Deep Jade Mine