Body Burdens of Caesium-137 in Toronto in 1964–1967

  title={Body Burdens of Caesium-137 in Toronto in 1964–1967},
  author={Kenneth G. McNeill and Joan E. Harrison},
SINCE 1958 the caesium-137 body burden of persons living in Toronto who have no history of radioactive contamination apart from that present in the normal population has been measured regularly. When the last report was made1 the burdens of caesium-137 caused by fall-out appeared to have passed a maximum—the highest average figure recorded was 23.7 nc. in the winter of 1963–64.