Before revision: He is also a former Professor of engineering at Queensland University of Technology Dix is also the elected president of International Tunnelling and Underground Space Association (ITA), which is based in Geneva .
After revision: and is the peak advisory body on the underground to the United NationsHe is also a former Professor of engineering at Queensland University of Technology Dix is also the elected president of International Tunnelling and Underground Space Association (ITA), which is based in Geneva .