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 completes field work at two soil cleanup campaigns
December 19, 2023 - N3B is making steady progress in a key program central to the legacy cleanup mission at Los Alamos National Laboratory....
N3B makes waste cleanup progress at LANL in fiscal year 2023
October 31, 2023 - LOS ALAMOS, N.M. – Newport News Nuclear BWXT Los Alamos (N3B) successfully completed several key legacy waste cleanup accomplishments at Los...
EM-LA, N3B to discuss FY23 cleanup progress at Cleanup Forum on Nov. 1
October 24, 2023 - EM-LA and N3B will hold an Environmental Management Cleanup Forum on Nov. 1 to discuss recent legacy waste cleanup progress...