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CIVIL DEFENSE OBSERVERS FROM OUTSIDE THE UNITED STATES ATTENDING NUCLEAR DETONATION AT NEVADA TEST SITE JULY 24, 1957 Canada Major-General F. F. Worthington Brigadier George Creffield Lt. Col. Charles L. Smith Mr. John F. Wallace France Mr. Henri Laborie, Prefect Commandant Etienne Bastin Captain Herve Bongrain Federal Civil Defense Co-ordinator of Canada, Department of National Health and Welfare Chief, Plans Section, Federal Civil Defense Headquarters, Department of National Health and Welfare Chief of Training and Operations, Federal Civil Defense Headquarters, Department of National Health and Welfare Deputy Commandant and Chief Instructor, Canadian Civil Defense College, Depart- ment of National Health and Welfare Deputy Chief for National Service for Civil Protection, Ministry of the Interior Consultant for National Service for Civil Protection, Ministry of the Interior Technical Consultant for National Service for Civil Protection, Ministry of the Interior Captain Michel Saunois Mr. Francois Lenouvel Mr. Antoine Martin Technical Consultant for National Service for Civil Protection, Ministry of the Interior Engineer, Atomic Energy Commission Chief Engineer of Bridges and Causeways, Technical Consultant for National Service for Civil Protection, Ministry of the Interior