45 m deep in the ground, work begun on cutting a tunnel between two shafts (PGC and PPI) on the SPS site. It was in this tunnel that 'the Mole' and its train were assembled to begin burrowing their way around the 7 km circumference of the machine.
Title: Black holes at CERN
Creator: CERN PhotoLab
Date Created: 1972-08, 1972
Medium: Film, Photographic negative
Link to Internal Document: http://cds.cern.ch/record/1729533
Internal Reference: Rubrique: Date Planche:8 72 De:51 A:65