This would typically be a manufacturer, distributor, licensed radioactive waste broker, or a licensed low-level radioactive waste disposal facility.

FORBES: Radioactive Tritium Leaks from Nuke Plant; Also Two Million EXIT Signs

Britain needs to find a site for the long-term underground disposal of high-level radioactive waste.

BBC: Schematic of repository

Britain needs to find a site for the long-term underground disposal of high-level radioactive waste as some if it stays dangerous for 100, 000 years.

BBC: Cumbria ruled out of current nuclear waste dump plans