Two computer hard drives containing nuclear secrets that disappeared at the U.S. nuclear laboratory at Los Alamos have resurfaced under questionable circumstances in a secure area within the facility, U.S. officials said today. Energy Secretary Bill Richardson, at a hastily called news conference in Phoenix, said the area where the hard drives were found--the so-called X Division at Los Alamos National Laboratory in New Mexico--is being treated by the FBI as a crime scene. The location where the hard drives were found previously had been searched by investigators.