How the world's longest underwater tunnel was built - Alex Gendler

Summary by Krater

This video details the history and engineering behind the construction of the Channel Tunnel connecting Britain and France, covering its early proposals, economic challenges, geological obstacles, and eventual completion in 1994.

From the video

Answers: How was the Channel Tunnel built and what challenges did engineers face?

• Channel Tunnel construction
• tunnel boring machines
• geological surveying in tunneling
• history of the English Channel crossing

What it concludes

• The Channel Tunnel cost the equivalent of 14 billion pounds, making it the most expensive infrastructure project to date.
• During construction, 13,000 people were employed and 10 workers lost their lives.
• British worker Graham Fagg and a French counterpart made contact on December 1st, 1990, becoming the first humans to cross the channel by land since the ice age.
• The Channel Tunnel opened on May 6th, 1994, and today services over 20 million passengers a year.