Dr. Kenneth N. Han is a distinguished professor emeritus of materials and metallurgical engineering at the South Dakota School of Mines and Technology. He received his BS and MS degrees from Seoul National University and MS and PhD degrees from the University of Illinois and the University of California, Berkeley, respectively. He was a lecturer and a senior lecturer in chemical engineering at Monash University in Melbourne, Australia (1971–1980). He joined SDSM&T in 1981. His research interests cover hydrometallurgy, interfacial phenomena, metallurgical kinetics, solution chemistry, fine particle recovery, and electrometallurgy.