Director reviews claims based on atmospheric nuclear test participation only if the following criteria are met: (1) The veteran was exposed to ionizing radiation as a result of participation in atmospheric nuclear weapons testing or the postwar occupation of Hiroshima or Nagasaki, Japan; (2) The veteran subsequently developed one of the illnesses listed below, each of which might be radiogenic; and (3) The illness became manifest during the specified time, also identified below (12). The VA accepts the following illnesses as possibly being radiogenic: All forms of leukemia except chronic lymphatic leukemia Thyroid cancer Female breast cancer Lung cancer Bone cancer Liver cancer Skin cancer Esophageal cancer Stomach cancer Colon cancer Pancreatic cancer Kidney cancer Urinary bladder cancer Salivary gland cancer Multiple myeloma. The rulings specify that the leukemia and bone cancer must become manifest within 30 years after exposure and that the other forms of cancer must become manifest within 5 years or more after exposure (12). In reviewing a claim, the Chief Benefits Director considers such factors as the probable dose, the relative sensitivity of the involved tissue to induction of the specified condition by ionizing radiation, the veteran’s gender and pertinent family history, the veteran’s age at time of exposure, the time elapsed between exposure and onset of the disease, and possible contributions to the disease made by exposures to radiation or other carcinogens yy 60