1. Formerly with Department of Metallurgical Engineering, Ohio State University, Columbus, Ohio 43210; currently with Babcock and Wilcox, Alliance, Ohio 44601 US
2. Formerly with Department of Metallurgical Engineering, Ohio State University, Columbus, Ohio 43210; currently with National Bureau of Standards, Boulder, Colo. 80303 US
3. Professor, Department of Metallurgical Engineering, Ohio State University, Columbus, Ohio 43210 US
4. Research leader, Battelle-Columbus Laboratories, Columbus, Ohio 43201 US