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
Nationally recognized award given to N3B employees for building homegrown workforce
June 16, 2020 - LOS ALAMOS, N.M. — Three staff members at Newport News Nuclear BWXT Los Alamos (N3B) recently received a nationally recognized award...
N3B donates $100,000 to NNMC President’s Eagle Fund
May 4, 2020 - N3B donates $100,000 to NNMC President’s Eagle Fund LOS ALAMOS, N.M.—Newport News Nuclear BWXT Los Alamos (N3B) and Northern New...
UNM-LA and NNMC students receive environmental scholarships
March 11, 2020 - LOS ALAMOS, N.M.—Three Northern New Mexico students have received the Danny Nichols Memorial Scholarship, which was established to attract talented...