Peter Malmgren, an oral historian and cabinet maker, is the author of Los Alamos Revisited: A Workers’ History, which uses oral histories to tell the story of Los Alamos National Laboratory from the perspectives of the people who helped build and maintain it. Malmgren has been a resident of Chimayó, New Mexico since 1971. In this interview, he discusses some of the oral histories from his book and what he has learned about Los Alamos in the process. Malmgren describes interviewees’ perspectives on discrimination, health and safety, and working conditions. He also describes how the interviews have informed his own views of the Los Alamos laboratory.