Bushveld complex and related intrusions Palaeomagnetism Investigation of the behaviour of platinum group elements in natural systems and the application to technical processes Basin analysis: Transvaal and Waterberg basins Environmental and engineering geology Groundwater exploration and management Precambrian crustal evolution Karoo coal deposition: Controls on swamp formation Dynamics of magmatic intrusions Exploration for Southern African magmatic Cu-Ni-PGE sulphide ores Economic Geology Structural and exploration geophysics Applied Mineralogy