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NNSA Hosts NPT Parties at Los Alamos and Sandia National Laboratories

WASHINGTON D.C. - On March 25-27, 2015, the National Nuclear Security Administration (NNSA) hosted representatives from 11 States Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) and one representative from the United Nations Office for Disarmament Affairs. The officials from the non-nuclear-weapon States visited facilities at Los Alamos National Laboratory (LANL) and Sandia National Laboratories (SNL) related to U.S. implementation of the NPT.
The NNSA Laboratories gave an overview of the multidisciplinary work involved in maintaining a smaller stockpile of nuclear weapons in a non-explosive testing environment through science-based stewardship. They also showed activities that increase confidence in the safety, security, and effectiveness of the U.S. nuclear stockpile and ultimately allow for future reductions.

The group visited facilities and observed R&D demonstrations illustrating U.S. efforts to meet future nuclear arms control monitoring and verification requirements. These activities highlighted laboratory capabilities supporting a wide variety of other national and international security goals, including nonproliferation and nuclear security.

The two-day visit and discussion of laboratory capabilities are among a number of U.S. transparency measures stemming from the 2010 NPT Review Conference Action Plan that encourages NPT nuclear-weapon States to enhance transparency and build mutual confidence.

The visit was led by Ambassador Adam Scheinman, U.S. Special Representative of the President for Nuclear Nonproliferation, and Dr. Don Cook, Deputy Administrator for Defense Programs.

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Established by Congress in 2000, NNSA is a semi-autonomous agency within the U.S. Department of Energy responsible for enhancing national security through the military application of nuclear science. NNSA maintains and enhances the safety, security, reliability and performance of the U.S. nuclear weapons stockpile without nuclear testing; works to reduce global danger from weapons of mass destruction; provides the U.S. Navy with safe and effective nuclear propulsion; and responds to nuclear and radiological emergencies in the U.S. and abroad. Visit for more information.