Breakthrough for World's Longest Tunnel

Summary


Swiss engineers have smashed through the last stretch of rock to create the longest tunnel in the world - 35.4 miles (57 kilometres).

A gigantic drilling machine broke the remaining wall more than 8,200ft (2,500m) below the imposing Piz Vatgira peak in the Gotthard massif several minutes ahead of schedule.

See the full content of this document

Extract


Breakthrough for World's Longest Tunnel

Miners, ...

See the full content of this document

Sponsored links




ver las páginas en versión mobile | web

ver las páginas en versión mobile | web

© Copyright 2012, vLex. All Rights Reserved.

Contents in vLex United Kingdom

Explore vLex

For Professionals

For Partners

Company