Man-made sources of radiation pollution are
Mining and refining of radioactive elements
Nuclear power plants
Improper disposal of nuclear wastes
Explosion of nuclear weapons
Radioactive pollution can be defined as the type of pollution caused by the release of radioactive substances or high energy particles into air, water, or earth as a result of human activities, either by accident or by design. These sources include mining and refining of radioactive elements, production and explosion of nuclear weapons, nuclear power plants, improper disposal of nuclear wastes and preparation of radioactive isotopes.