Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more


Contractors have removed the last rock pillar supporting the 60m long, 35m wide roof of Gallery UX15, part of the giant, £992M particle accelerator being built at the Cern physics research centre in Switzerland. CCC joint venture, bringing together Swiss contractor Zschokke Loscher, German firm Baresel and Austria's Porr-Asdag Tunnelbau, has so far excavated the gallery to a depth of 10m. Access to the gallery is by two shafts, each the diameter of a Channel Tunnel bore.

Subscribe for full online access and get...

  • Full, instant access to all stories
  • Customised email alerts straight to your inbox
  • Monthly print magazine

Register for guest access to keep reading and get..

  • A free taste of other selected news stories
  • Daily email newsletters

Already have a subscription or ICE membership? or