CRITICALITY SAFETY

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Across
  1. 5. ADD U235
  2. 8. NEUTRONS LOSS ENERGY
Down
  1. 1. NEUTRONS DIRECTED BACK
  2. 2. MATERIALS THAT LIKE NEUTRONS
  3. 3. GEOMETRY CONTROL
  4. 4. EXCHANGE OF NEUTRONS BETWEEN FUEL
  5. 6. QUANTITY IN GRAMS
  6. 7. MASS OF FISSIONABLE ISOTOPE PER VOLUME