Tracy Test Facility, California

A commercial munitions and explosives test facility, adjacent to the Department of Energy's Lawrence Livermore National Lab test facility, Site 300. Operated for years by Physics International, a company that works in explosive research and pulsed power applications. In the 1980's, Physics International was purchased by Olin, one of the oldest and largest conventional munitions manufacturers in the USA, which also produces chemicals, composite materials, metals, aerospace products, and sporting products, such as skis and tennis rackets.