MONT BLANC TUNNEL

major Alpine automotive tunnel connecting France and Italy. It is 7.3 miles (11.7 km) long and is driven under the highest mountain in Europe. The tunnel is notable for its solution of a difficult ventilation problem and for being the first large rock tunnel to be excavated full-facei.e., with the entire diameter of the tunnel bore drilled and blasted. Otherwise it was conventionally driven from two headings, the Italian and French crews beginning work in 1958 and 1959, respectively, and meeting in August 1962. Many difficulties, including an avalanche that swept the Italian camp, were overcome, and when the tunnel opened in 1965, it was the longest vehicular tunnel in the world. It fulfilled a 150-year-old dream and is of great economic importance, providing a significantly shortened year-round automotive route between the two countries. In March 1999, however, a two-day fire caused extensive damage to the tunnel, forcing it to close. More than 40 people were killed, and the tunnel was not scheduled to reopen until late 2000.