types of engineers

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Across
  1. 3. assress
  2. 6. focus on chemicals
  3. 8. make drilling plans
  4. 11. make electrical systems
  5. 12. blasting explosives
  6. 14. maintain pipelines
  7. 18. reduces waste and increases productivity
  8. 20. maitain tools
Down
  1. 1. work on drilling platforms
  2. 2. high-level projects
  3. 4. makes and repairs jet engines
  4. 5. make roads and buildings
  5. 7. make wind turbines
  6. 9. design makes physical components
  7. 10. helps pilots fly
  8. 13. make railroads
  9. 15. test racecars
  10. 16. lasermotorsporty
  11. 17. plant manage gas plant places
  12. 19. make nuclear energy