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 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...
N3B employees inspire NM youth at Summer Physics Camp for Young Women
June 10, 2021 - LOS ALAMOS, N.M. — In hopes of educating and inspiring New Mexico’s youth to pursue STEM-related careers that benefit their...
LANL Individual Permit status meeting scheduled for June 16
June 9, 2021 - LOS ALAMOS, N.M. — The Department of Energy’s Environmental Management Los Alamos Field Office (EM-LA) and its cleanup contractor Newport...