Engineering...........how do u think they made those tunnels?.............some are miles long...i do not think they dug them with a fucking shovel........but blasted their way through..
....just think, my friends, of the commercial and military potential of a device that can go from Cali to Dover.......in like 24 minutes...............Air and Space.................also a backwards innuendo to the Chunny..........tunnel from France to England........vice versa.......under the English channel.......

Tunnels & Bridges - The Transcontinental Railroad

Bridges and Tunnels on the Transcontinental Railroad ... They crossed rivers, canyons, through mountains, and over dry gullies that would wash with ... were suspended by ropes while they hacked, drilled and