At the 3rd Meeting in 1968 (University College London) a constitution was proposed for the Mass Spectroscopy Group (MSG). One inclusion was that the Committee had to include one representative each from the Institute of Petroleum and the Mass Spectrometry Discussion Group (MSDG). This suggests a coming together of various MS interest groups, but also indicates the key users of the technique at time.
The constitution was accepted and by 1969 at the University of Sheffield, Alan Quayle had duly joined the Committee representing the Hydrocarbon Research Group of the Institute of Petroleum, with R.S.Lehrle representing the MSDG. This specific representation continued until 1976.