The Rock is Removed by Blasting
Boring machines and dynamite will be used to remove about 8 million t of rock to complete the new tunnel. Moreover, four residential properties and several barns are sacrificed to allow space for the construction work.
1 The bored upperout just part likeof the in tunnelany other will tunnelbe construction project. Boring is carried out simultaneously from both sides. 2 Subsequently, the underlying rock layers are removed by blasting, layer by layer, and carried away by boat. 3 To prevent water from entering, the exterior part of rock remains as a plug, which is removed, once the rest of the tunnel has been completed.