Engineers

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Across
  1. 5. roads
  2. 6. carbon arches
  3. 10. Pedalpoweredbillboards
  4. 11. planes
  5. 12. HDH
Down
  1. 1. water saving pavement
  2. 2. insulations
  3. 3. medical
  4. 4. lightbulb
  5. 7. fridge
  6. 8. buildings
  7. 9. engineer Jet engines