Mine Shafts serve as the entrances to some underground tunnel networks in certain missions.
- In Warranty Void, once the bridge has been repaired and defended for 4 minutes so four of the ROC Rebels' Demolition Trucks could arrive, the rebels' Mine Shaft will fall under control of the player. In this mission, it is functionally identical to a Soviet Barracks.
- In The Lunatic, there's a Mine Shaft located at the top left of the map. If the player use the Engineer to capture it, the intelligence will point out that the ROC Rebels is likely to have used the Mine Shaft.
- In Fallen Ashes, one Mine Shaft in the outpost is owned by the player. In this mision, it functions as an Epsilon Barracks.
- In Survivors, after Malver runs into the Infiltrators and Engineer, the Engineer will immediately capture the nearby Mine Shaft. It also functions as an Epsilon Barracks in this mission.