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The top documents tagged [tbms double shield]
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tbms double shield
Main TBM Projects in Spain. MAIN TBM PROJECTS IN SPAIN Abdalajis Tunnels (9 Km) 2 TBMs Pajares Tunnels (25 Km) 5 TBMs Tunnel del Perthus (8 Km) San Pedro.
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Main TBM Projects in Spain
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