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The Clue

Oppenheimer's agcy. (3 letter answer)

The Answer

AEC

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Notes

The answer AEC is seen frequently, appearing about once every 180 puzzles.

Related Clues

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N.R.C. preceder
N.R.C. predecessor
N.R.C.'s predecessor
Nuclear agcy.
Power org.
Agcy. replaced by the N.R.C.
Agcy. succeeded by N.R.C.
Agcy. succeeded by the N.R.C.
Agcy. superseded by the N.R.C.
Agency supplanted by the N.R.C.
Bygone nuclear agcy.
Former energy org.
Former nuclear agcy.
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Former regulatory org.
Now it's N.R.C.
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Nuclear energy agcy.
Nuclear-energy org.
U.S. power org.
Agcy. spawned by the Manhattan Project
Federal agcy. of 1946-75
Federal agcy., 1946-75
Former nuclear power org.
Former nuclear watchdog: Abbr.
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Old nuclear regulatory org.
Original nuclear regulatory grp.
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Org. once headed by Lewis Strauss

Definition

AEC as a noun:

1. (Atomic Energy Commission, AEC) = a former executive agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States