Dogs trained to search for explosives and other substances were pushed "beyond their physical capacity" while working last year at a federal facility that handles, processes and stores highly enriched uranium, according to a report released this week.
The Energy Department's inspector general found that canine security teams at the Y-12 National Security Complex in Oak Ridge, Tenn., were overworked, citing an instance in which a handler and a dog conducted 102 vehicle searches over a two-hour period.
Workers for the private contractor providing the dogs told investigators that requests for breaks were ignored by supervisors.
The highly sensitive site is patrolled by human-dog teams that search for explosives, drugs and intruders. The facility was broken into last year by antiwar activists, prompting questions into the security at Energy Department installations.