Transportation of parts for the BEBC magnetic shielding

The first large units of the magnetic shield for the 3.7 m European hydrogen bubble chamber arrived at CERN from CAFL (France) at the beginning of August. The unit shown in the photograph 6.8.70 is the lower disc weighing 48 tons which supported the expansion system operating from below chamber. A second unit was the lower ring weighing 80 tons on which the chamber body and the superconducting magnet supported.