a reason these rods are 'missing'.
-There are trace amounts of transuranics (including plutonium and other heavier elements), as well as technicium-99, and uranium-236 in this depleted uranium which came primarily from the enrichment process. The machinery used for the enrichment process was also used in the 1950-1970's to enrich uranium extracted from recycled reactor fuel.-
http://www.nukewatch.com/du/20010123nato.html
WISE Uranium Project - Fact Sheet
Hazards from depleted uranium
produced from reprocessed uranium
There has been concern about the detection of uranium-236 in depleted uranium (DU) used for
the production of ammunition. U-236 is an artificial nuclide of uranium which only can result
from the use of uranium recycled from spent fuel.-
( christ, this is a long link! Can't do it to you, people...)
type in a Gooooogle search- before it's scrubbed.
[ Uranium 236 is only produced in reactors ]
then select :
... from DU used for penetrators would be only 0.7% higher than from DU obtained from
enrichment of natural uranium. U-236 would contribute 0.53% to the dose, Pu ...
www.antenna.nl/wise/uranium/pdf/durepe -