National Security Action Memorandum 235
NATIONAL SECURITY ACTION MEMORANDUM NO. 235 was an NSAM signed by President Kennedy at Washington D.C. on April 17, 1963 which placed requirements on Federal agencies and required Presidential approval prior to conducting Large-Scale Scientific or Technological Experiments with Possible Adverse Environmental Effects. It was sent to and stated: NSAM 235 was declassified on September 22, 1993. See also Partial Nuclear Test Ban Treaty NASA References Kennedy Library, National Security Files, Departments and Agencies Series, Space Activities, General, 1/63-5/63, Box 307. Confidential. Declassified. United States national security directives United States national security policy