Related Clues:

• Hwy. planner
• Mech. master
• Bridge bldr.
• Many a NASA worker (Abbr.)
• RR VIP
• Mech. expert
• Many an M.I.T. grad
• Many an RPI grad
• Army Corps tech.
• Former Caltech sr., perhaps
• Mechanical or electrical pro
• Caltech grad's occ., often
• Certain Georgia Tech gradà
• Abbr. for an MIT grad
• GM worker