Seven Years of Research Data - Free to Readers!The tunnelbuilder archive has now been cataloguing bids and awards for seven years - some 4,000 reports, all of which can be retrieved instantaneously by word search. That's a powerful reference for any engineer, consultant or contractor putting together a bid! Costs/metre can be compared for various methods and ground conditions, together with timings, planned and actual. Differing expectations are recorded for over 120 countries - a boon to any company wishing to expand into markets beyond existing borders.Our websites are attracting up to 1,500 readers every working day, and many of these are already benefiting from archive searches. Just one more way in which tunnelbuilder is promoting the world's tunnelling industry.To enter, click here or on Main menu choice Archive. 37/05.