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
In Pictures: EM’s Avery Views Los Alamos Legacy Waste Disposition Progress
May 21, 2024 - U.S. Department of Energy Office of Environmental Management (EM) Principal Deputy Assistant Secretary Jeff Avery, left, visits Technical Area 54,...
N3B demonstrates new system to enhance analysis of waste drums
May 21, 2024 - LOS ALAMOS, N.M.— A system developed in the United Kingdom to more accurately analyze the contents of radioactive waste drums...
N3B awards two new subcontracts valued at $36.5 million
May 8, 2024 - LOS ALAMOS, N.M.—Newport News Nuclear BWTX Los Alamos (N3B) recently awarded two new small business subcontracts worth up to $36.5...