1. Assoc. Prof., Dept. of Mech. Engrg., Univ. of Pittsburgh, Pittsburgh, Pa.
2. Sr. Stress Analyst, O'Donnell and Assoc., Inc., Pittsburgh, Pa.; formerly, Dept. of Mech. Engrg., Univ. of Pittsburgh, Pittsburgh, Pa.
3. Mgr., Industrial Hygiene, Mobay Chemical Corp., Pittsburgh, Pa.; formerly, Dept. of Mech. Engrg., Univ. of Pittsburgh, Pittsburgh, Pa.
4. Sr. Design Engr., Mobay Chemical Corp., Pittsburgh, Pa.; formerly, Dept. of Mech. Engrg., Univ. of Pittsburgh, Pittsburgh, Pa.