Quote Originally Posted by Csar
If anyone has more sites you should post them.
Here's one for balance. And Here is one that originally appeared in the Washington Post. Here's a sample:

There is theoretically a cancer risk if a person ingests uranium dust, but the amount required would be huge, said Raymond A. Guilmette, a radiobiologist at Lovelace Respiratory Research Institute in Albuquerque.

He calculated that a person would have to eat 100 micrograms of depleted uranium -- mixed with dirt, this would amount to about a half teaspoon -- every day for 50 years to get just one one-thousandth of the radiation dose experienced, on average, by nuclear industry workers. A recent study of 100,000 such workers from three countries found a slight increase in leukemia and no increase in other forms of cancer.

Inhalation is the other potentially hazardous route of exposure to depleted uranium dust.

Studies of uranium miners from the 1940s and 1950s, who were exposed to both radon gas and uranium dust, found an increase in lung cancer (especially in smokers) decades after exposure, but no increases in leukemia, lymphoma or other cancers. Recently, a study in the Journal of the National Cancer Institute found no relationship between acute lymphoblastic leukemia -- the most common childhood cancer -- and household levels of radon.