HS2 completes 'green' tunnel
HS2 has completed its first 'green' tunnel, am 880m cut-and-cover tunnel at Copthall built by SCS (Skanska, Costain, Strabag) using 1.2m cubic metres of material excavated from nearby Northholt tunnel.
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HS2 has completed its first 'green' tunnel, am 880m cut-and-cover tunnel at Copthall built by SCS (Skanska, Costain, Strabag) using 1.2m cubic metres of material excavated from nearby Northholt tunnel.
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