state library and town hall stations central cavern arch lining
MELBOURNE METRO TUNNEL PROJECT
Whole new way to build station cavern arch lining, first in the world to fully prefabricate an arch structure, underground.n Whole new way to build station cavern arch lining, first in the world to fully prefabricate an arch structure, underground.cavern arch lining, first in the world to fully prefabricate an arch structure, underground.
