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Re: [Way off topic] depleted uranium

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:
>      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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