This completely original Crossword has 25 Clues. (the asterisks indicate a type of engineer) WORD BANK: Aerospace*; Airports; Chemical*; Circuit; Civil*; Computer*; Electrical*; Energy Sources; Engineer; Engineering Design Process; Environment; Hardware; Highways; Install and Maintain; Manufacturing*; Materials*; Mechanical*; Minerals; Mining*; Planetary*; Pollution; Productivity; Software; Structural*; Technical. Sample clues: .................................................................