UNITED STATES ATOMIC ENERGY COMMISSION WASHINGTON. D.C. 20545 Anion LW ocr 17 be ADDENDUM MATERIAL FOR CLASSIFIED TECHNICAL BRIEFINGS The attached material is forwarded for review and concurrence. This material, together with the previously forwarded final draft copy of the unclassified technical briefings, constitutes a major portion of the classified briefings to be presented to the Office of Science and Technology ad hoc committee on nuclear underground test safety presently scheduled for November 7 and 8, 1968. Your comments, suggestions and concurrence are requested by memorandum. Remaining material will be forwarded as received. CLASSIFICATION CANCELLED WITH DELETIONS drew Boreske, Jr. Colonel, USAF Assistant Director for Tests Division of Military Application * - he st EG VERSION Gi: Charles L. Marshall, Director, Division of Classification Martin B. Biles, Director, Division of Operational Safety John S. Kelly, Director, Division of Peaceful Nuclear Explosives John A. Harris, Jr., Director, Division of Public Information Allan M. Labowitz, Special Assistant for Disarmament, Office of the General Manager — Attachments: 1. Illustration (Cy 10A) 2. Addendum - Off-Site Radiological 3. Addendum to Attachment 1 4. Safety Program (Cy 10A) Seismological Consideration “aeSAE US DOE ARCHIVE $96 U.S. ATOMIC ENERGY RG Collection DOS MeCyavs Box_/ T TRANSMITT DATA COMMISSION Jeb /3tre Folder When separated from enclosures, handie this document UNCLASSIFIED (insert proper classification) G8e1715