
Azvi begins concreting the upper slab of the Seville Metro Line 3 tunnel
Azvi has begun concreting the upper slab of the tunnel it is building on Seville Metro Line 3, with nearly 300m already completed. The slab includes a series of openings to excavate inside the tunnel. Excavated material will be removed through these openings and then disposed of from the surface. This procedure enables excavation to continue beneath the completed slab without disrupting local residents, redevelopment of the surface








