‘ ~33- 25-165 rads on Haréh 17, 1953; 120-735 rads on May 19, 1953; 7-42 rads on March 1, 1955; 4-24 rede on May 15, 2°55; and 28-185 rads on August 31, 1957. these doses are repress ntative of the whole of Washington county, The August 31, 1957 value was duc to shot "Smoky" of Operation Plumbob. Fallout from this explosion resulted in measurements indicating infant thyroid doses of 10-67 rads over an 8000 square nile area outside the Test Site, of which Washington county comprised 7500 square miles. Equally high levels were reported as fur away as Rock Springs, Wyoming, 700 miles from the Test Site. | Cases of relatively high thyroid doses in locations distant from the Nevada Test Site appear to be fewer than mear the Site, although this may be due in part to the fact that monitoring outside the test area is even less extensive than for the region within a 200 sile radius. One distant case was that in Groy, New York on april 26, 1953. Contam- ‘ination of milk was not measured at thet time but Ralph Lapp ‘estimates that iodine 131 in milk might have reached 100,000 dure per liter, As a result, infants may have received doses to the thyroid as high as 30 rads. During 1952 and 1953, one to ten rad doses or more to infont thyroids may have occurred in areas near Salt Lake City on May 7, 1952 and again on i:-rch 24, 1953; at Boise, Idaho and Great Falls, Montana on June 5, 1952; Boston, Massachusetts