Tim ODriscoll became well known nationally and internationally for his experimental work on rock deformation and his meticulous plotting of lineaments, associated fracture patterns and ring structures, but perhaps most for his application of both lines of research to the practical problems of locating mineral deposits. His work led to significant advances in the Broken Hill and Kambalda mineral fields but he will be remembered particularly as a member of the distinguished Western Mining Corporation team that discovered and planned the early development of the world-class Olympic Dam ore body.