ISR groundbreaking

Starting on the ISR tunnel. These photographs were taken on 2 November when work began at the position of the intersecting rings on the French half of the CERN site. The earth excavated in carving out this tunnel, 15 m wide about 7 m high and with an average diameter of 300 m, was transported to a dump on the opposite side of the Geneva - St.-Genis road using a tunnel cut under the road. The earth required later as shielding around the storage rings was stocked on the site.