The Manhattan Project was an enormous national effort, but it is often forgotten that many foreign-born scientists played vital roles. In particular, the United Kingdom greatly assisted the United States in developing nuclear weapons during World War II. We examine key British contributions to the Manhattan Project, especially the valuable efforts of two dozen scientists who came by way of Britain to work at Los Alamos.

Alan Carr currently serves as a program manager and the senior historian for Los Alamos National Laboratory. During his tenure as a laboratory historian, Carr produced several publications and lectures pertaining to the Manhattan Project, nuclear testing history, and the historical evolution of LANL. Carr completed his graduate studies at Texas Tech University.