HFEF provides 15 state-of-the-art workstations known as hot cells. For windows, each cell has leaded glass panes layered thick and separated by thin layers of oil. Remote manipulators allow users to maneuver items inside the hot cell using robotic arms. And special filtered exhaust systems keep indoor and outdoor air safe. At these stations, scientists and technicians can better determine the performance of irradiated fuels and materials. Scientists can also characterize materials destined for long-term storage at the Waste Isolation Pilot Plant in New Mexico.