types of engineers

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Across
  1. 3. created the railroad system
  2. 6. created antibiotics
  3. 8. created spacecrafts
  4. 9. created battle ships
  5. 10. look and create better systems to recycle
Down
  1. 1. created Lithium-Ion Batteries
  2. 2. they developed computer systems
  3. 4. have created Iceberg Detectors
  4. 5. created the digital camera
  5. 7. focus primarily on rod pumping and gas lifts