Related Clues:

• Conductor's coworker
• Driver who's on track?
• One may be civil
• Conductor's co-worker
• Tech-school grad
• One who designs, makes or runs motors
• Person in charge of building bridges, etc.
• Person who uses scientific knowledge to solve practical problems
• Bring about, being skilled in machinery
• One can be chemical, civil or mechanical
• Chemical, civil or mechanical professional
• Professional who may be civic, electrical or mechanical
• Chemical, civil, mechanical or electrical professional
• He may be civil, mechanical or electrical
• Operator of a railway locomotive