1. Senior Staff Engineer, Simpson Gumpertz and Heger, Inc., 41 Seyon St., Building 1, Waltham, MA 02453.
2. Principal, Simpson Gumpertz and Heger, Inc., 1375 Broadway, Suite 600, New York, NY 10018.
3. Senior Principal, Simpson Gumpertz and Heger, Inc., 41 Seyon St., Building 1, Waltham, MA 02453.