Radioactive materials lost in more than 30 incidents over past decade Gleep nuclear reactor research station at Harwell,

Health and safety watchdog admits firms and hospitals have mislaid dangerous substances that could be used by terrorists
The Gleep nuclear reactor at the former research station at Harwell, where mislaid cobalt-60 was found in a store. Photograph: David Sillitoe for the Guardian

Radioactive...Radioactive materials lost in more than 30 incidents over past decade Gleep nuclear reactor research station at Harwell,