Last week, the Federation of American Scientists' Secrecy News blog found a U.S. report detailing the sites and assets of the nation's nuclear power industry posted on the website of the Government Printing Office. While most of the information in the report can be found through other sources, the document is understandably considered very sensitive, Arstechnica reports.

U.S. officials maintain that no information from the accidental posting -- all 266 pages -- has compromised national security. That news comes as little consolation to Energy Secretary Steven Chu, who expressed concern regarding a uranium storage facility at the department's Y-12 facility in Oak Ridge, Tennessee.

"That's of great concern. We will be looking hard and making sure physical security of those sites is sufficient to prevent eco-terrorists and others getting hold of that material," Chu said.

The leaked document is intended as part of an agreement on nuclear material inspection under the International Atomic Energy Agency's nuclear nonproliferation effort.