I remember seeing a Discovery documentary named "Extreme Engineering: Trans-Atlantic Tunnel" that precisely details this concept. It's available online in five

I remember seeing a Discovery documentary named "Extreme Engineering: Trans-Atlantic Tunnel" that precisely details this concept. It's available online in five parts: http://www.youtube.com/watch?v=frYWTrEfPRs http://www.youtube.com/watch?v=frYWTrEfPRs http://www.youtube.com/watch?v=YKaVQ5Tt_Zk http://www.youtube.com/watch?v=YKaVQ5Tt_Zk http://www.youtube.com/watch?v=4zci_6AOCAo http://www.youtube.com/watch?v=4zci_6AOCAo http://www.youtube.com/watch?v=Z2c6vzcmULU http://www.youtube.com/watch?v=Z2c6vzcmULU http://www.youtube.com/watch?v=zoPI2doRkgA http://www.youtube.com/watch?v=zoPI2doRkgA