Gert Judeel has specialized in rock engineering, in geotechnics and mining over the past 31 years. He has been involved in the design of support systems and mining extraction sequences for deep gold mines to prevent falls of ground and rock burst accidents, specializing in shaft pillar extraction and pillar designs for shallower platinum mines for 23 years. He has gained 4 years’ experience while working on the design and excavation of inclined and vertical shafts in South Africa, Peru, Russia, Kazakhstan and Indonesia, specializing in shaft lining design for shafts to be excavated in poor quality rock masses and high stress environments. He is the founder of the firm GeoSindile and has been working as an independent consultant in the geotechnical and mining engineering fields since February 2012.