Allan Moss is a general manager at Rio Tinto's Copper Group with responsibilities in cave design and operation. He is approaching 40 years of experience, the majority of which has been focused on underground mining. After graduating from Strathclyde University in Scotland he joined Goldfields of South Africa where he worked in gold and tin mining, moving for a period into consulting in South Africa and Canada prior to joining Rio Tinto in 1999. Over the last 10 years he has been heavily involved in all of Rio Tinto's caving operations, from the implementation of the Palabora block cave in South Africa to technical and project reviews at joint venture operations such as Freeport's DOZ Mine in Indonesia. He has written a number of technical papers on caving and is currently involved in teaching the principles of caving at the University of British Columbia.