Military Fissile Material Declared Excess (in tonnes)*

-
Plutonium
HEU
Britain
Russia
United States
4.4
50
52.5
0
500 (assumed weapon-grade)
174 (100 tonnes WGU-eq**)
Total
107
647 (600 tonnes WGU-eq)
Already Disposed of
0
96 (93 tonnes WGU-eq)
* Source: David Albright and Mark Gorwitz, Plutonium Watch -- Tracking Civil Plutonium Inventories: End of 1999, Institute for Science and International Security, October 2000.
**WGU-eq – weapon-grade uranium equivalent