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
N3B donates $10,000 to local nonprofit, supports residents in need
August 16, 2021 - N3B Staff presented a check last week to LA Cares, a local non-profit that provides assistance to residents in need...
Apprenticeship program in environmental cleanup offering associate’s degree
June 24, 2021 - LOS ALAMOS, N.M. — An N3B apprenticeship program that trains students in the U.S. Department of Energy’s (DOE’s) Environmental Management...
N3B and EM-LA to hold virtual Environmental Management Cleanup Forum on June 24, 2021
June 17, 2021 - The Department of Energy’s Office of Environmental Management Los Alamos Field Office and its legacy waste contractor, N3B-Los Alamos, are...