The U.S. federal government accidentally made public a 266-page report that gives detailed information about the hundreds of nuclear sites and programs around the country, including maps showing the precise locations of stockpiles of fuel for nuclear weapons.

The report was marked, "highly confidential", and sparked a debate among officials about the dangers, should there be any, the release of the documents posed. Investigators also prompted to find out why the document was made public.

"These screw-ups happen," said John M. Deutch, a former director of central intelligence and deputy secretary of defense and professor at the Massachusetts Institute of Technology. "It's going further than I would have gone but doesn't look like a serious breach."

But the president of the Institute for Science and International Security David Albright said the information that shows where nuclear fuels are stored "can provide thieves or terrorists inside information that can help them seize the material, which is why that kind of data is not given out."

President Obama had sent the document to Congress on May 5th for Congressional review and possible revision, and the Government Printing Office somehow posted the draft declaration on its Web site.

The reasons as to why the document got posted online was still unknown, as its cover referred to the Committee on Foreign Affairs and stated to be printed. But the committee spokeswoman, Lynne Weil, said the committee had "neither published it nor had control over its publication."

Gary Somerset, a spokesman for the printing office said they had "produced" the document "under normal operation procedures" but has already removed it from it's Web site.

U.S Accidentally Releases List of Nuclear Sites [NYTimes]