Engineers

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Across
  1. 4. antibiotics
  2. 6. natural resources
  3. 8. reinforced concrete
  4. 9. nanotechnology
  5. 10. machines
Down
  1. 1. space x falcon 9
  2. 2. radio
  3. 3. HVAC
  4. 5. products
  5. 7. vaccines