1. Technology Leader for Tunnels, Parsons Engineering Science, Inc 110 West A St. Suite 1050. San Diego, CA 92101
2. Manager, Underground Construction; Parsons Engineering Science, Inc 110 West A St., Suite 1050. San Diego, CA 92101
3. Project Manager, Parsons Engineering Science, Inc., 1154 Hawkins Blvd, El Paso, Texas; 79932
4. Assistant Engineer, City of San Diego Materials Testing Laboratory, 9491 Aero Drive, San Diego, CA, 92123