Bryan Nelson is technical manager – nonferrous metals for Allied Mineral Products Inc., Columbus, Ohio, USA, where he has been since 2012. He previously spent nine years working in sales for Spar Inc., three years heading up the Nonferrous Metals Group of National Refractories, and 19 years working for North American Refractories Company where he was responsible for research, technical services, and marketing in the nonferrous metals market. He is the inventor of porous plug technology originally branded the AL Clean System for injecting various gases in aluminum and copper. He is the holder of a joint patent on new carbon bake brick technology. He attended the University of Missouri-Rolla, now the Missouri University of Science and Technology.