Welcome to the Department of Energy OpenNet System

The OpenNet database provides easy, timely access to over 485,000 bibliographic references and 140,000 recently declassified documents, including information declassified in response to Freedom of Information Act requests. In addition to these documents, OpenNet references older document collections from several DOE sources. This database is updated regularly as more information becomes available. If you have any questions or comments, please contact us at opennet@osti.gov or use the Contact Us link above the Search box.

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The Manhattan Project Resources

U.S. Department of Energy

Office of Environment, Health, Safety and Security

Office of History and Heritage Resources


Smyth Report and Tolman Committee Reports

The Department of Energy's Office of Classification and Office of History and Heritage Resources have joined together in a collaborative effort to make available documents which constitute the very beginnings of declassification efforts and classification/declassification guidelines, which began as part of the Manhattan Project, and formed the basis for the Department's classification/declassification efforts. See Reports.

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J. Robert Oppenheimer Personnel Hearings Transcripts

J. Robert Oppenheimer Personnel Hearings Transcripts In December 1953, the Atomic Energy Commission (AEC) suspended the security clearance of Dr. J. Robert Oppenheimer, and after a four-week, closed-door hearing in April and May 1954, formally revoked that clearance. In June 1954, the AEC released a redacted version of the hearing transcript, (see AEC press release), with security classified information deleted, published by the Government Printing Office (GPO) under the title, In the Matter of J. Robert Oppenheimer: Transcript of Hearing before Personnel Security Board. See Oppenheimer transcripts.

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