Average Number of Incidents Involving Nuclear or Radioactive Materials

Between 1995 till 2010, there have been an average of 19 nuclear smuggling incidents involving stolen or lost nuclear and radioactive materials each year.

The figure by the IAEA listed above is significantly lower than the 200 to 250 cases reported by the United States Department of Homeland Security. The difference in figures is due to the fact that the IAEA only reports incidents that its members have confirmed or released publicly, where the DHS includes all known or suspected incidents that were identified by the United States and other governments.

Source:  Peter N. Spotts, “US trains nuclear detectives to trace ‘loose’ nukes,” Christian Science Monitor, March 19, 2010.