The Sandia National Laboratories division at Livermore, California, is a Department of Energy (DOE) facility. Its mission includes protecting the nation from terrorist threats, providing solutions to energy problems, and ensuring the safety and effectiveness of the nuclear weapons stockpile. Since opening in 1956, Sandia/California has been active in California's technical community. Sandia innovations introduced into industry - such as clean rooms for semiconductor manufacturing - have had an enormous impact on commercial processes. Sandia's original emphasis on nuclear weapons related engineering expanded into new areas as national security requirements changed. Today, with no nuclear testing, Sandia's weapons work focuses on ensuring that the nuclear stockpile is safe, secure, and reliable through advanced modeling and simulation coupled with laboratory and field testing.