Yep. From http://www.isisuk.demon.co.uk/0811/isis/uk/regpapers/no78_paper.html#5
The degree of chemical toxicity of uranium is similar
to that of other heavy metals, cadmium or lead. The
real reason for concern - as in the case of the
radiation hazard - lies in the clouds of uranium
dust thrown up by the impact of DU penetrators on
hard objects such as tanks. American Army tests
have indicated that up to half of the uranium oxides
produced by these impacts is relatively soluble. Whether
swallowed or breathed in such material is quickly
dissolved in the body's fluids and transported
around the bloodstream. Uranium's reaction
with other biological molecules causes damage.
About 90 per cent of the uranium is excreted by
the kidneys within 24 to 48 hours, and it is in
the kidneys themselves that almost all the damage
occurs. In the acid environment of urine the uranium
combines with proteins in the tubular walls of the
kidney causing cell death, and decreased ability
to filter. The remaining 10 per cent of uranium
that is not excreted lodges permanently in organs
such as the liver and kidney, in fat and muscle
but chiefly in the bones. Here it can form a
long-term radiological hazard but the only
known evidence of chemical damage from uranium
in humans is to the kidneys.
The last paragraph is a magnificent piece of ass-covering:
In order to inhale a dangerous level of uranium
dust someone would either have to have been in
a tank when it was hit by a DU-based round; or
have entered the tank immediately afterwards in
a rescue attempt; or taken part in a lengthy
clean-up inside the vehicle without proper
respiration gear; or engaged in other activities,
such as a recovery operation, leading to
the inhalation of freshly kicked up dust.
"Or engaged in other activities," meaning having been unlucky enough to breathe in a good lungfull of dust.
Curtiss