Since UV radiation scatters easily from many surfaces, and exposure to UV radiation can cause cancer, it is important to contain UV radiation as much as possible. Also, wear gloves when hands are near the beam, and long sleeve lab coats and face and eye protection against UV radiation exposure. Avoid putting hands into the invisible beam; use fluorescent screens to define the beam. When intense UV radiation is absorbed in air, ozone will be produced. Ozone is toxic, and proper ventilation must be provided. Call Environmental Health & Safety at 723-0448 for assistance on ozone problems. Health Physics at 723-3201 will advise on UV radiation hazards.