A joint venture led by Hochtief has been awarded a contract to build a tunnel complex for physics research project involving X-rays near Hamburg, Germany. The US$267M package of tunnelling work will require approximately 5.8km of bores plus shafts to be constructed with work commencing this month. The job involves sinking six shafts and excavating the tubes at depths up to 26m. Tolerance for the tunnels is 100mm along the length of the complex. Construction on the projects is due to be finished in April 2013 and the client, Deutsches Elektronen-Synchrotron (DESY) research centre, aims to start operations with the European XFEL X-ray laser facility in 2014. The scheme is funded by ten EU countries, Russia, China and two German states, and is being built to help study viruses, chemistry and planetary physics.
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