Nagasaki atomic bomb feature

Library of Congress: Nagasaki, Japan under atomic bomb attack

Congress Passes the Atomic Energy Act

By July 20, 1946

Congress passes the Atomic Energy Act. The purpose of this act is to ensure that any information related to atomic weapons and nuclear material is kept secret. The act is sometimes known as the McMahon Act after the bill’s sponsor Brien McMahon of Connecticut.

In 1954, a major amendment to the act is passed. The amendment allows for private corporations to obtain some nuclear related information in order to advance the nuclear energy industry.


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