Re Yellowcake approval by ERMA under the Hazardous Substances & New Organisms Act: A shameless amateur speaking here, but I thought that radioactive material does not come under the HSNO Act. The hazard classification system used by the the HSNO Act is the United Nations Globally Harmonised System, which has 9 hazard classes. Except that the HSNO Act leaves out Class 7 Radioactive Materials, because the regulation of radioactive material is covered by other pieces of legislation (especially the Radiation Protection Act).