August 1, 1997

On July 2, 1997 at approximately 6:00 am, two operators (Workers 1 and 2), wearing approved personal protective equipment (PPE), began a shredding operation of HEPA filters for volume reduction in Building 513 (B-513) at Lawrence Livermore National Laboratory (LLNL). The waste requisitions indicated they were shredding filters containing #1 µCi of americium-241 (Am-241)