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Planning and Design
Testing and Quality Control
Management and Maintenance
Safety and Environment
Urban Shield tunnels
Tokyo Metropolitan Subway Line No.12 (Toei Oedo Line)
Submarine Shield tunnels
Tokyo Bay Aqualine Tunnel
Immersed tube tunnels
Tokyo Port Daiichikoro Tunnel (Rinkai Tunnel)
Tokyo Port Tunnel
Tunnel Rehabilitation
Rehabilitation of the Ahmed Hamdi Tunnel under the Suez Canal
Specialized tunneling methods
Special Shield Tunnels
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