Write a translation or a missing word in collocations

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Across
  1. 1. засыпка (засыпочный материал)
  2. 4. action
  3. 6. ground/terrestrial
  4. 7. захоронение
  5. 8. design basis accident
  6. 9. злоумышленный
Down
  1. 1. safety/protective
  2. 2. under aircraft crash
  3. 3. inspection
  4. 5. защитная оболочка