U.S. accidentally releases list of civilian nuclear sites

A 267-page document listing all U.S. civilian nuclear sites along with descriptions of their assets and activities became available on whistleblower Web site Wikileaks.org days after a government Web site publicly posted the data by accident.

The sensitive, but unclassified, data had been compiled as part of a report being prepared by the federal government for the International Atomic Energy Agency (IAEA). It was scheduled to be transmitted to the agency later this year and was sent for congressional review by President Obama on May 5, according to a report in the New York Times.

The document, which had been marked by the president as "Highly Confidential Safeguards Sensitive," subsequently appears to have, for some unexplained reason, been publicly posted by the U.S. Government Printing Office (GPO) on its Web site, the Times said. The document has since been taken down but is now available from several locations via Wikileaks.org.

The document was discovered on the GPO Web site on May 22 by Steven Aftergood, director of the Federation of American Scientists' (FAS) Project on Government Secrecy. Aftergood on Monday posted the document on Secrecy News, a publication of the FAS that he maintains.

The breached document is titled The List of Sites, Locations, Facilities, and Activities Declared to the International Atomic Energy Agency, and contains detailed information on hundreds of civilian nuclear sites in the country, including those storing enriched uranium. The report lists details on programs at nuclear weapons research labs at Los Alamos, Livermore and Sandia.

A message to Congress from Obama at the beginning of the document states that "appropriate measures" have been taken to ensure that no information of "direct national security significance" has been included in the document. While the IAEA classification for such declarations is "Highly Confidential Safeguards Sensitive," the U.S. considers the data "sensitive but unclassified," the president said in his letter.

Aftergood, in an interview, said he spotted the document during a "routine review" of new GPO publications. While scanning through the latest releases on May 22, Aftergood said he saw the one on the nuclear sites.

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