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?
N3B Releases 2025 Community Commitment Annual Report READ MORE >
Updates on Hexavalent Chromium Campaign READ MORE >
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
Growing diversity through workforce development programs
February 27, 2020 - LOS ALAMOS, N.M. – In an effort to create a homegrown and well-paid workforce that represents greater diversity, Newport News...
N3B contributes nearly $415,000 to community groups in 2019
February 23, 2020 - LOS ALAMOS, N.M.—In 2019, 45 Northern New Mexico community groups received $414,444 from Newport News Nuclear BWXT Los Alamos (N3B)....
Dorian Newton honored as a Black Engineer of the Year
February 13, 2020 - LOS ALAMOS, N.M.—Dr. Dorian G. Newton has been named Black Engineer of the Year in the category of Educational Leadership...