University Distinguished Professor Nicholas T. Camicia Professor Director, Center for Advanced Separation Technologies Roe-Hoan (Ro-han) Yoon is a professor of mineral processing at Virginia Tech. He graduated from Seoul National University, Korea, in 1967 with a BS degree in mining engineering. He went to McGill University for graduate studies and received a Ph.D. in metallurgical engineering in 1977. During 1976 and 1979, he worked as Research Scientist at the CANMET in Ottawa, Canada. He jointed the faculty of Mining Engineering at Virginia Tech in 1979 as Associate Professor. He became a full Professor in 1984, and was promoted to Nicholas T. Camicia Professor in 1985. He served as Director of the Center for Coal and Mineral Processing during 1988 and 2001, and is currently serving as Director, Center for Advanced Separation Technologies (CAST) which is a consortium of seven U.S. universities with expertise in mineral processing and coal preparation. Dr. Yoons research interest is in flotation and surface chemistry. B.S. Seoul National, 1967 M.S. McGill University, 1971 Ph.D. McGill University, 1977