The federal Energy Department says it's met a requirement to open its collection of documents supporting plans for a national nuclear waste dump in Nevada.
The declaration "certifying" the electronic Licensing Support Network is a key step toward applying for a license to operate the Yucca Mountain project.
The department plans to make that license application to the Nuclear Regulatory Commission by June 30.
Congress in 2002 picked the Yucca site about 100 miles northwest of Las Vegas to entomb 77,000 tons of spent nuclear reactor fuel.
Project director Edward F. "Ward" Sproat III says the LSN contains more than 30 million pages and more than 3.5 million scientific, geologic and engineering documents.