Uranium Uranium is a naturally occurring radioactive metal. It is part of rocks, soil, water, and air in small amounts, and contributes to the weak background radiation that is found everywhere. Uranium is used in nuclear power plants and nuclear weapons, and small amounts can be found in ceramic glazes, light bulbs, photographic chemicals, and other household products. Because it is found nearly everywhere, we are exposed to small amounts of natural uranium daily. People can come into contact with larger amounts of uranium by working at nuclear power plants, weapons production facilities, or uranium mines and mills, and in manufacturing specific items.
Exposures can lead to absorption of uranium, mostly through inhalation and ingestion.
Inhalation of airborne uranium dusts is the most common route for workplace exposures. Ingestion of uranium-contaminated food and water is another possible route of exposure in the workplace. Once inhaled, uranium dust can leave your body as you exhale, or can be excreted in the urine. If you ingest uranium, most will leave your body within a few days in the feces. But sometimes uranium will stay in the lungs, or it can get into the blood, kidneys, and bones.