Operations. They discussed DOD research to identify participants in the atmospheric nuclear weapons tests and possible exposures to ionizing radiation resulting from their participation. March 1979 DNA initiated a notification and medical examination pro- April, May, and August 1979 Subcommittee on Oversight and Investigations, House Committee on Interstate and Foreign Commerce, conducted four hearings to consider health and safety issues related to the atmospheric nuclear testing program. The hearings, directed to civilian residents downwind of the tests, were on 19 April 1979 in Salt Lake City, Utah, 23 April 1979 in Las Vegas, Nevada, and 24 May and 1 August 1979 in Washington, D.C. May 1979 DNA expanded the notification and medical examination program to include the Desert Rock Volunteer Observers. 8 May 1979 DNA representatives testified at a hearing held by the Subcommittee on Energy, Nuclear Proliferation and Federal Services of the Senate Committee on Governmental Affairs. gram for all DOD test participants with cumulative doses from atmospheric nuclear testing in excess of 25 rem. They identified the progress made by DNA and the serviée teams to collect data on DOD participants in atmospheric nuclear weapons testing. June 1979 DNA expanded the notification and medical examination program to include all participants with doses in excess of 5.0 rem during any 12-month period. 15 June 1979 DOD and VA representatives signed a formal Memorandum of Understanding concerning the investigation of ionizing radiation injury claims from veteran atmospheric nuclear test participants. 20 June 1979 DNA representatives testified at a hearing held by the Senate Committee on Veterans Affairs. They discussed the declassification of documents relevant to atmospheric nuclear weapons testing and dose reconstruction for test participants who did not wear badges. 3 October 1979 DNA expanded the NTPR effort to include U.S. service personnel who had participated in the postwar occupation of Hiroshima and Nagasaki, Japan. August 1980 DNA issued a detailed fact sheet on the U.S. postwar 28 September 1980 The CBS television program "60 Minutes" aired a segment on the NTPR program. occupation of Hiroshima and Nagasaki. 199