Site 300, California

A test range and proving ground located in the bare, rolling Altamont Hills between the town of Tracy and Lawrence Livermore National Lab. One of the premier explosives R&D sites in the country, the 11 square mile range is considered part of the Department of Energy's Lawrence Livermore Lab. Facilities include: two high explosive firing areas; a chemical processing lab; the Flash X-Ray Facility and other particle beam research facilities; the Contained Firing Facility, used to study the dynamics of explosions; an administration area near the main gate; and what was then the world's largest gun, the Super-High-Altitude Research Project, which was part of a study of a new method of putting objects into orbit, conducted in the 1990s. In 1990, Site 300 was declared a Superfund cleanup site by the EPA, due to extensive environmental contamination. Remediation efforts are ongoing.

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