Robert Lyster Thornton was the assistant director of the Process Improvement Division of the Tennessee Eastman Corporation at Oak Ridge, Tennessee. In this interview, Thornton remembers Ernest Lawrence asking him to join the Manhattan Project just after Pearl Harbor. He explains the development and workings of the Beta plant at Oak Ridge. He also discusses the challenges he faced separating uranium isotopes, the uranium enrichment process, and the thousands of men and women who helped in the process.
In this interview, Wallace Reynolds, Duane Sewell, and Elmer Kelly recount their Manhattan Project experiences at Berkeley and Oak Ridge. This trio was part of the first group to arrive at Oak Ridge. They discuss the difficulties and obstacles that surrounded the cyclotrons and isotope separation, remarking that there was never a doubt that the job could be done. They also talk about Ernest Lawrence’s role, describing him as a natural leader completely dedicated to the project.