Quantities of Nuclear Fuel and Potential Energy Yield*
95.3
0.6
1,200
7: Th – USGS 2004 (reserves)
317,760
2,200
4,400,000
6: U in seawater
1,600
10.0
20,000
5: Phosphate deposits
Small
Small
Small
4: Surplus military U & Pu
160
Very small
2,000
3: Used fuel
1,223
7.7
15,400
2: IPCC CC2M (total conventional)
253.6
1.6
3,192
1: U–USGS 2179-A (reserves)
Fast Reactors EJ x10-3
Thermal Reactors EJ x10-3
Uranium Resources
te x10-3

    Sources of U and Th
* D.Lightfoot et al, “Nuclear Fission Energy is Inexhaustible”, Proc. Climate Change Technology Conference, EIC, Ottawa, May 2006