section of service tunnel was dug beneath the English coast through ground that had been filled with instruments to assess the performance of the TBM. This section of service tunnel was incorporated into the successful scheme a decade later. In the late 1970s, British Rail and SNCF appointed MHA and Setec as advisors to a smaller-scale project which also came to nothing. In the early 1980s, Mott, Hay and Anderson provided design services to two of the consortia bidding for the Channel Tunnel (Euroroute, who proposed a road tunnel, and the Channel Tunnel Group). The bid by the Channel Tunnel Group and France Manche was successful: the two bidders joined forces and reformed as an operating company Eurotunnel and construction contractor TransManche Link. MHA were appointed as the contractor's designer for the works on the British site (designing temporary works, bored tunnel linings, cut-and-cover tunnels, earthworks, trackwork, terminals & sea defences) and as designer for the ventilation, aerodynamics, smoke control and refrigeration systems in the entire tunnel. Between 1986 and 1994, the company expended approximately 650-man-years of work on the design of the Channel Tunnel. Sources External links Mott MacDonald website Mott MacDonald website page on Channel Tunnel Construction and civil engineering companies of the United Kingdom Consulting firms established in 1902 Construction and civil engineering companies established in 1902 1902 establishments in England British companies disestablished in 1989 British companies established in 1902 Construction and civil engineering companies disestablished in the 20th century