World's longest tunnel nears breakthrough





Date: 15/10/2010

Swiss engineers are set to smash through the last pieces of rock to complete the digging of the world's longest transport tunnel. [From Mark Bartlett]


External links

World's longest tunnel completed
The drill, nicknamed Sissi, breaks through the final centimetres of tunnel

BBC

Engineers drill through the last remaining rock to create the world's longest transport tunnel under the Alps in Switzerland.