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
Channel Tunnel over its predicted budget. Since its construction, the tunnel has faced a few mechanical problems. Both fires and cold weather have temporarily disrupted its operation. People have attempted to use the tunnel to enter the UK illegally since 1997, creating the ongoing issue of the migrants around Calais on the French side, causing both diplomatic disagreement and violence. In 1802, Albert Mathieu-Favier, a French mining engineer, put forward a proposal to tunnel under the English Channel, with illumination from oil lamps, horse-drawn coaches, and an artificial island positioned mid-Channel for changing horses. Mathieu-Favier's design envisaged a bored two-level tunnel with