How You Earn Credits. You qualify for Social Security. benefits by earning. Social Security credits when. you work in a job and pay. Social Security taxes.
Introduction. The atomic bomb survivors of Hiroshima and Nagasaki are a significant population for the study of radiation induced human leukemia. Whole body irradiation is most likely the cause of the leukemia caused by the atomic bomb radiation.[1] Follow-up of Japanese adult survivors of Hiroshima and Nagasaki have revealed abnormally high rates of cancer, persistent chromosomal aberrations in circulating lymphocytes, and lenticular opacities.3] Finally, children of atomic bomb survivors, who received exposure in utero ionizing radiation, had diminished stature, small head size, mental retardation, and subsequent seizures. [3] Study of the aforementioned groups has provided essential knowledge on the health effects of atomic bomb radiation.
It  is estimated that over 200,000 casualties were caused by this bomb,  with a large number of them being caused after the bomb by  radiation poisoning.    In 1945 Hiroshima became the first city ever to be bombed by an  atomic bomb. The second Japanese city, Nagasaki, was bombed on the  9th of August.