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Related Clues:
- Scoring a 10 in gymnastics, say
- Accomplishment
- Big bang source
- Notable achievement
- Manhattan Project event
- Bikini burst
- 1948 event dubbed 'Operation Sandstone'
- Nuclear event, in headlines
- Many a Guinness listing
- Tour de force
- Grand slam, e.g.
- Onetime Marshall Isl. event
- Bikini event, in old headlines
- Skillful act
- Courageous act