The motley Fool, page-3

Just to back up what I am saying about PRISM, read this document -:

http://www.sustainablenuclear.org/PADs/pad0305dubberly.pdf

Page 4 is interesting i.e.

P4 (3) No additional uranium will need to be mined for hundred years because S-PRISM based fast reactors will be able to extract over 2100 TWy from the depleted uranium stock piles and spent LWR fuel (Figure3).

By the time that the present U.S. fleet of LWRs complete their operating life the amount of fertile material (depleted uranium) and fissile material (Pu and minor actinides) that will be available to use as a secure long term energy resource dwarfs all the other U.S. energy reserves as illustrated in Figure 4.

1,900. TWy from tails (w/o further mining) + 224. TWy by processing spent LWR fuel + 14. TWy by mining U.S. Reserves (< 130$/kg)

2,138. TWy from U.S. Reserves w Fast Reactor, 2.85 TWy was used in the U.S. in 1994, that was from "ALL" sources i.e coal, oil gas. Uranium LWR,

Looking at that graph on Page 4, the US to date from all records has produced 251TWy from coal, oil gas, Light Water Reactors using LEU.

Table II illustrates the impact that the operation of various reactor types would have on the need for uranium and spent fuel storage and disposal. A 1000 MWe LWR will produce about 1000 tonnes of spent fuel and require the production of about 11,000 tonnes of depleted uranium over its operating lifetime.

While the S-PRISM based fast reactor produces very little waste and consumes less than 1 tonne of uranium-238 per year.

By the time that the present U.S. fleet of LWRs complete their operating life the amount of fertile material (depleted uranium) and fissile material (Pu and minor actinides) that will be available to use as a secure long term energy resource dwarfs all the other U.S. energy reserves as illustrated in Figure 4.