After six and a half years of work, CERN leaders and dignitaries celebrate the completion of a second detector cavern. The CMS cavern is 53 x 27 x 24 metres. The construction was delayed by six months after workers unearthed 4th century Gallo-Roman ruins at the work site. Archaeologists found a Gallo-Roman villa with surrounding fields, coins from Ostia (a seaport of Rome), Lyon in France (then Gaul) and London.
CMS cavern inaugurated
The Large Hadron Collider