NM
Los Alamos National Laboratory
Los Alamos National Laboratory, established in 1943 as part of the Manhattan Project, is the premier nuclear weapons design laboratory in the United States. It serves as the design agency for most nuclear warheads in the U.S. stockpile, operates some of the world's fastest supercomputers, and conducts cutting-edge research in physics, materials science, and threat reduction.
Sandia National Laboratories
Sandia National Laboratories is the engineering laboratory of the nuclear weapons enterprise, responsible for non-nuclear components, systems integration, and ensuring the safety, security, and reliability of the nuclear stockpile. Sandia works on every weapon system in the U.S. arsenal and has expanding missions in energy security, cybersecurity, and defense systems.
Waste Isolation Pilot Plant (WIPP)
The Waste Isolation Pilot Plant is the nation's only deep geologic repository for the permanent disposal of defense-generated transuranic (TRU) radioactive waste. Located 2,150 feet underground in an ancient salt formation, WIPP receives TRU waste from DOE sites across the country for permanent isolation from the environment.
TN
Y-12 National Security Complex
The Y-12 National Security Complex in Oak Ridge, Tennessee is the nation's primary facility for processing and storing weapons-grade highly enriched uranium (HEU). Y-12 manufactures uranium components for every nuclear weapon in the U.S. stockpile and plays a critical role in global nuclear nonproliferation through HEU downblending programs.
Oak Ridge National Laboratory
Oak Ridge National Laboratory is DOE's largest science and energy laboratory, hosting the world's most powerful supercomputer (Frontier, first exascale system) and the Spallation Neutron Source. ORNL supports NNSA missions through nuclear security research, isotope production, and materials science for weapons programs.
WA
Hanford Site
The Hanford Site, a 586-square-mile former plutonium production complex along the Columbia River, is the largest environmental cleanup project in the world. Nine nuclear reactors and associated processing facilities produced plutonium for the U.S. nuclear arsenal from 1943 to 1987, leaving behind 56 million gallons of radioactive tank waste and extensive groundwater contamination.
Pacific Northwest National Laboratory
Pacific Northwest National Laboratory conducts research spanning national security, clean energy, and environmental science. For NNSA, PNNL provides expertise in nuclear nonproliferation, nuclear forensics, radiation detection, and arms control verification. It operates the Environmental Molecular Sciences Laboratory and the Radiochemical Processing Laboratory.
About DOE Nuclear Security Sites
The National Nuclear Security Administration maintains the safety, security, and effectiveness of the U.S. nuclear weapons stockpile through a network of national laboratories, production plants, and test sites. These facilities are operated by private contractors under Management and Operating (M&O) contracts, creating a vast ecosystem of subcontracting opportunities.
For federal contractors, DOE nuclear security sites offer long-term, high-value contracting opportunities in nuclear engineering, environmental remediation, construction, IT services, security, and facility operations. Most positions require DOE Q or L security clearances, and contractors must comply with stringent nuclear quality assurance standards (NQA-1) and safety regulations.