Rachel Erlanger worked in a Kellex Corporation chemistry lab in New Jersey, where they researched gaseous diffusion barriers and other processes critical to the development of the K-25 plant. She got involved in the Manhattan Project when responding to an ad for Kellex. As a chemist, she recognized uranium-235 as the material used in an atomic bomb. In this interview, she describes how she got involved in the Manhattan Project, her excitement at contributing at that time, and how her attitude turned more negative after the war. She recalls her and her mother’s experiences during the prewar era and the pressure for women to marry and have children. She also briefly discusses her husband Bernard Erlanger, who also worked on the Manhattan Project.