Nevada National Security Site

In 1950, President Truman established what is now known as the Nevada National Security Site (NNSS) to perform nuclear weapons testing activities. In support of national defense initiatives, a total of 928 atmospheric and underground nuclear weapons tests were conducted at the NNSS between 1951 and 1992, when a moratorium on nuclear testing went into effect. Today, the NNSS is a large, geographically-diverse research, evaluation and development complex that supports homeland security, national defense, and nuclear nonproliferation.

Nye County, Nevada, is the host community of the NNSS, where there are National Nuclear Security Administration (NNSA), Environmental Management (EM), Legacy Management (LM) missions, in addition to the Yucca Mountain Nuclear Waste Repository nearby.

Lincoln County, NV

Nye County, NV

Consolidated Group of Tribes and Organizations, current liaison position filled by Richard Arnold (Full Liaison*)

• The Consolidated Group of Tribes and Organizations (CGTO) has been a liaison to the NSSAB since 2013. The CGTO consists of 16 tribes with cultural and historic ties to the NNSS with specific interests in planning, developing, and monitoring EM activities at the NNSS.

Nevada Site Specific Advisory Board

• The Nevada Site Specific Advisory Board is a part of the Environmental Management Site-Specific Advisory Board, a stakeholder board that provides the Assistant Secretary for Environmental Management and designees with independent advice, information, and recommendations on issues affecting the EM program at various sites. Among those issues are clean-up standards and environmental restoration; waste management and disposition; stabilization and disposition of non-stockpile nuclear materials; excess facilities; future land use and long-term stewardship; risk assessment and management; and clean-up science and technology activities.

  • Phone: (702) 523-0894; Email: nssab@emcbc.doe.gov

Mission Support and Test Services, LLC – Management & Operations

• MSTS is made up of Honeywell International Inc. (Honeywell), Jacobs Engineering Group Inc. (Jacobs), and Stoller Newport News Nuclear, Inc. (SN3).

SOC – Protective Force Services

Navarro Research and Engineering, Inc. – Environmental Remediation

J.G. Management Systems, Inc. (JGMS) - Administrative support services for the NNSA Nevada Field Office

Federal Government

• U.S. Senator Catherine Cortez Masto (D)

• U.S. Senator Jacky Rosen (D)

• U.S. Rep. Steven Horsford (D) (NV-04)

State Government

• Gov. Joe Lombardo (R)

• State Sen. John Ellison (R) (District 19)

• Assemblyman Gregory Hafen (R) (District 36)

Local Government

• Lincoln County Commissioner & Commission Chair Janine Woodworth

• Lincoln County Commissioner Diane Path

• Nye County Commissioner Bruce Jabbour

Nevada National Security Site (Public Affairs)

• Phone: (702) 295-3521; Email: Nevada@NNSA.doe.gov

Lincoln County Offices

• Phone: (775)-962-8000

Nye County Public Information Office

• Arnold Knightly, Public Information Officer

  • Phone: (775) 751-4282; Email: aknightly@co.nye.nv.us

• Transuranic and Solid Waste Disposition

• Soil and Groundwater Remediation

In March 2024, the Office of Environmental Management released a Strategic Vision for 2024-2034.

Planned Cleanup Scope 2024–2034

The EM Nevada Program continues to work towards the completion of the model evaluation phase for Pahute Mesa, including groundwater well drilling, and transition of the groundwater corrective action area into long-term monitoring. This action will complete the EM Nevada Program’s groundwater mission at the NNSS and will culminate in the transfer of oversight responsibilities for closed groundwater corrective action areas to a long term steward.

The full NNSS Strategic Vision is available here.

NNSS global security efforts fall into five distinct areas: chemical, biological, radiological, nuclear, and explosive (CBRNE). These efforts encompass those activities that are, in most cases, direct outgrowths of NNSS’s historical work in nuclear weapons issues. These efforts include counterterrorism activities, bio-security projects, nuclear forensics and detection capability development, weapons and material protection, and emergency and event response. Threat reduction comprises those activities intended to reduce national security threats before they amass into distinct CBRNE threats.

A primary mission of the NNSS is to help ensure the Nation’s nuclear weapons stockpile remains safe, reliable, and secure from our enemies. To accomplish this, Stockpile Stewardship deploys a wide range of science and technologies, focused on experiments in weapons science and the potential for weapons dismantlement.