Accidents at work and in public places - Expertise based on seventeen years in construction industry. Design, manufacture, erection, strengthening, repairs and demolition of various structures, mining, power, chemical and marine installations, temporary works, excavation, earthworks, foundations, roads, drainage, materials testing, quality control, opencast mining, safe practices. Twenty-one years at Curtin University. Materials testing and technology, slipperiness of surfaces, evaluation of risks. Motor vehicle accidents - Expertise based on collision tests and training seminars at Technical University of Berlin and elsewhere. Eighteen years as consultant to WA police, in criminal cases including manslaughter. Extensive court experience predominantly for the prosecution, and also for the defence.