International Cooperation under the U.S.

National Nuclear Security AdministrationÝs

Sister Laboratory Arrangement Program


In the early 1980s, the United States launched a new initiative to establish cooperative institutional relationships between its own nuclear research laboratories and those in developing nations that have supported the Nuclear Nonproliferation treaty (NPT). Mexico was the first beneficiary of the Sister Laboratory program when its National Institute of Nuclear Research was paired with Los Alamos National Laboratory in March 1982. In addition, Sister Lab arrangements are currently in place with Argentina, Costa Rica, Ghana, Romania, Thailand, Egypt, Morocco, and Peru.

These arrangements generally provide for the following: