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’s support of Northern New Mexico communities outlined in 2022 annual report
February 6, 2023 - LOS ALAMOS, N.M. – N3B Los Alamos contributed nearly $370,000 to community nonprofits and workforce development initiatives in Northern New...
2022 highlights of N3B Los Alamos’ legacy environmental cleanup at LANL
January 12, 2023 - LOS ALAMOS, N.M. — In its fourth year addressing environmental impacts from Los Alamos National Laboratory’s (LANL) Manhattan Project and...
N3B Los Alamos brightens holidays for Española’s Conjunto Preschool children
January 3, 2023 - LOS ALAMOS, N.M. – Employees at N3B Los Alamos brightened the holiday season for the children and families of Española’s...