ОписаниеThe National Institute of Radiation Breeding at Ohmiya, Ibaraki-Ken, Japan, operates a gamma field for the purpose of inducing plant mutations, especially in rice. It is a large field, surrounded by a high wall and access only through a heavy steel and concrete door for shielding. The picture shows the radiation tower and view towards the entrance gate and control room. IAEA/No. 1645. Please credit IAEA/Goldberger