Channel Tunnel over £3 million. Ten workers, eight of them British, were killed during construction between 1987 and 1993, most in the first few months of boring. A two-inch (50-mm) diameter pilot hole allowed the service tunnel to break through without ceremony on 30 October 1990. On 1 December 1990, Englishman Graham Fagg and Frenchman Phillippe Cozette broke through the service tunnel with the media watching. Eurotunnel completed the tunnel on time, and it was officially opened, one year later than originally planned, by Queen Elizabeth II and the French president, François Mitterrand, in a ceremony held in Calais on 6 May
Gotthard Road Tunnel north-south line in Switzerland. It was opened in 1882. In this category it is no longer the record-holder. The Seikan Tunnel in Japan and the Channel Tunnel between the United Kingdom and France are both in excess of . Under construction since 2002 and opened on 1 June 2016, the Gotthard Base Tunnel (a second rail tunnel, long), is the world's longest. It was built for the use of trains travelling from northern Switzerland to the Ticino area and beyond. The Gotthard Tunnel is the core and culminating point of the A2 motorway in Switzerland, running south from Basel through