Managing Los Alamos legacy waste
Learn how we execute the Los Alamos Legacy Cleanup Contract safely and securely.
Who we are
We manage the 10-year, $2.1 billion Los Alamos Legacy Cleanup Contract for the U.S. Department of Energy Environmental Management Los Alamos Field Office.
What’s New?
Environmental Management Cleanup Forum 12/17/2025 READ MORE >
Los Alamos Provides Legacy Waste Program Updates at Public Forum READ MORE >
Los Alamos Tour Informs Senate Committee Staff About Legacy Cleanup READ MORE >
Los Alamos Completes 200th Transuranic Waste Shipment to WIPP READ MORE >
What we do
We clean up, package and ship radioactive and hazardous Los Alamos National Laboratory legacy waste
Land
Water
Waste
Work with us
We’re a diverse team of problem-solvers and innovators, united by our commitment to N3B’s vital mission of legacy waste cleanup and community enhancement.
Latest News
N3B Bids Farewell to Three Summer Interns Who Made Significant Contributions
August 29, 2024 - LOS ALAMOS, N.M. – Newport News Nuclear BWXT Los Alamos (N3B), the legacy cleanup contractor at the Los Alamos National...
Community, Workforce Engagement Main Focus for Top EM Official
July 30, 2024 -
EM, Industry Fostering STEM Careers in Northern New Mexico
July 23, 2024 - On Panel 2, “Future of Tech and Opportunities in Northern New Mexico,” U.S. Department of Energy Office of Environmental Management...