During the 1950s, the Oak Ridge Graphite Reactor was the world’s single largest source of radionuclides, and the availability of these radionuclides revolutionized the field of medicine and many branches of science. The impact was no less great in the industrial sector. Radionuclides were produced in several ways, but neutron activation was perhaps the most important. The purpose of the dime irradiator at the American Museum of Atomic Energy, located in Oak Ridge, Tennessee, was to provide a dramatic demonstration of the principle of neutron activation. https://www.orau.org/health-physics-museum/collection/medals/irradiated-dimes.html