needed for a nuclear weapon 15-25[i]
Number of kilograms in global HEU stockpiles 1,900,000
Number of countries with at least 1 kg of HEU 53
Number of countries with at least one bomb’s worth (25kg) of HEU 24
Number of countries with at least twenty bombs' worth (500kg) of HEU 12
Number of kilograms of HEU in civil power and research programs 50,000
Number of civil research facilities that still have 20kg or more of HEU 128
Number of kilograms of plutonium needed for a nuclear weapon 4-8
Number of kilograms of plutonium in global stockpiles 1,830,000
Number of kilograms of weapons usable (separated) plutonium in
the global stockpile 238,000
Number of countries with at least one bomb’s worth (8kg) of plutonium 35
Number of countries with at least 5,000 kg of plutonium 25
Percentage of civil fissile material stocks that is plutonium 91
Number of kilograms by which civil plutonium increases every year 70,000
Number of kilograms of plutonium released on Earth from
nuclear explosions 10,000
Number of nuclear weapons that could be made
from existing fissile materials 300,000
Number of countries with uranium enrichment facilities 9
Number of countries with new enrichment or reprocessing projects 11
Number of illicit trafficking and other unauthorized activities involving
nuclear and radiological materials in 2004 121
Number of confirmed incidents involving trafficking of HEU or plutonium
between 1993-2004 18