The A.M. Macgregor Memorial Lectureship
1985 - J.F. Wilson - "A Craton and its Cracks"
1987 - A.C. Colvine - "Genetic Models in Gold Exploration"
1992 - K.A. Eriksson - "Crustal Growth, Surface Processes and Atmospheric Evolution of the Early Earth"
1994 - R.G. Park - "Early Proterozoic Plate Tectonics - An Analogue for the Archaean?"
1998 - E.G. Nisbet - "The influence of life on the face of the Earth"
2000 - M.J. de Wit - "Old rocks act lies: that's why it is so difficult to reconstruct what Earth looked like long ago"
Involving the IMM Southern and Northern Rhodesia Sections and IMM South Africa. A special Federal stamp issue was printed. The Hon. Sir George Davenport, Minister of Mines was Regional Vice-President of the IMM for southern Africa.