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
Canning Tunnel 1940s and constructed in conjunction with the opening of the dam. 110 men were employed in the first year of construction after which the workforce reduced to 60. The tunnel was built at a cost of $3.5 million and was officially opened in 1975 by Hon. D. H. O'Neil MLA the Minister for Works and Housing on Friday 17 January 1975. The Canning Contour Channel was maintained and partially operated for two years after the tunnel's opening as a precautionary measure. Canning Tunnel The Canning Tunnel is a tunnel that originates just west of Canning Dam and runs for approximately