Here are Excerpts from a Government Study of DU weapons and their effects on soldiers that use them and the people who live in the area where they are used.
DU are made from Alpha Particles of radiation. The heaviest and most dangerous particles in radiation. Alpha particles are 1.7 times denser than lead. They are so heavy that they can be stopped by a sheet of paper, so handling DU weapons pose almost no risk, however when they hit a tank and vaporize from the explosion, the Alpha Particles are released into the air and the ground in the form of minute dust particles where they are inhaled by soldiers and people who stir up the dust years later. The half-life of U238 (DU is 99% U238) is 4.5 billion years.  Uranium byproducts(such as Thorium (Th232)) have even longer half-lives, making uranium an element that gets more radioactive during its own decay process.
Numerous anti-tank rounds were fired in Ethan Allen Firing Range (a US based testing site for DU weapons). The soil surrounding the site was so contaminated wih radiation and toxin from DU that 4 inches of topsoil, over a few mile radius, was scooped up and later stored away as nuclear waste. [14e] DU dust results from the use of DU ammo (which forms as it pierces the armor) and can easily spread far away from the target. There was one tested case in the Gulf War where DU dust spread up to 42 km from an enemy target site pulverized with DU rounds.
Analysis of DU was achieved from investigating incidents of friendly fire. Over 200 vehicles that were hit by friendly fire were analyzed by the US military. [14f] Over 29 vehicles were found with abnormally high radioactive levels. 12 vehicles (including 6 Bradleys) were buried in Saudi Arabia due to substantial radioactive levels.[14f]
Numerous soldiers were also rumored to have been affected by DU. British SAS and US special forces, cleanup crews, and a wide variety of other military personnel who were constantly in the presence of DU contaminated sites were analyzed and in many cases shown to have contained abnormally high levels of uranium and radiation poisoning. Many veterans (not just those suffering from friendly fire) continue to have persistent medical problems. During the Gulf War, over 85% of military soldiers have wandered through at least some DU contaminated sites (e.g. destroyed Iraqi vehicles, bunkers, etc.) [14i]. Veteran groups estimate that +400,000 Gulf personnel have inhaled some amount of DU dust. By 1996, As a result of NBC (nuclear, biological, and chemical warfare), nearly +187,000 veterans have sought serious medical help and 18,200 were hospitalized. [14i] However in 1993, the Department of Veterans Affairs has done medical testing on soldiers who still have retained DU shrapnel within their bodies.16 Interestingly, the VA FINDINGS INDICATE NO DIRECT THREAT FROM DU. (This Omission from the study is the Dirty Secret, the Government knows the DU is having a long term effect on the health of the soldiers, but is not putting it in print or admitting it).