On Mon, 2005-01-03 at 10:01 -0500, Christopher Judd wrote: > On 29 Dec, David Raleigh Arnold wrote: > > On Tuesday 28 December 2004 08:28 pm, Sam Watkins wrote: > >> On Mon, Dec 27, 2004 at 02:46:33PM -0800, Steve Lamb wrote: [snip] > Wrong. Natural uranium is >99% U238, with trace amounts of U235 > and U235. The latter two species have much higher specific activities, > which is why they are useful for reactors/bombs. Depleted uranium is > what's left over after the U235 and U234 have been recovered; it is So the concentration of DU is greater than "greater than 99%"? > mostly U238. It has 50 - 60% of the alpha activity of natural uranium. > In addition, depleted uranium produced in the US has been shown to > contain trace levels of more dangerous gamma emitters. If you pick up > a shell as a souvenir and place it on your desk, the alpha activity > alone is enough to produce skin lesions after 30 - 80 hours of exposure. Hmmm, interesting. How toxic/hazardous is pitchblende? -- ----------------------------------------------------------------- Ron Johnson, Jr. Jefferson, LA USA PGP Key ID 8834C06B I prefer encrypted mail. "Vanity, my favorite sin." Larry/John/Satan, "The Devil's Advocate"
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