At CERN, he was chairman of the Emulsion Experiments Committee from the early 1960s as well as member of the Scientific Policy Committee (1969-1975), where he also spent two years as chairman (1972-1974).
Vid CERN var han från 1960-talet ordförande för the Emulsion Experiments Committee samt 1969-1975 medlem i the Scientific Policy Committe där han även spenderade två år som ordförande (1972-1974).