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Post by Owen on Feb 5, 2017 7:40:01 GMT
1 ~ Educational Video ~ Construction of New Gotthard Base Tunnel (57kms+) ~ 121
World's Longest & Deepest Tunnel Ever Built - Full Documentary
www.youtube.com/watch?v=pd_GnxHeQdA ~ 45:14 ~
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Post by Owen on Feb 5, 2017 8:42:00 GMT
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