Fame 3, <A security agreement, attached as Appendix ___, will be signed by un- clesred observers prior to their admission to the Nevada Proving Grounds. 4 FCDA and correspondent invitees will witness the shot from News Nob, an observation area segregated from cleared personnel except those assigned to conduct the visitors. E. TYPES OF PUBLIC ANNOUNCEMENTS TO BE ISSUED BY JOINT INFORMATION OFFICE 1. for In addition to announcements authorized in the Information Plan the series (Section E of AEC 487/31, dated February 6, 1953), the follow- ing information may be disclosed by the Test Manager. ao In order that Civil Defense officials may better interpret blast and radiological effects on FCDA structures; yield of device detonated at "open" shot, estimated yield may be Jisclosed prior to the shot and actual or estimated yield after shot. (Also FCDA has obtained permission for ten uncleared automotive engineers to assess damage to vehicles. Their technical competence plus their knowledge of the distance of various vehicles from ground zero will enable them to estimate with reasonable accuracy the yield of the device.) b. Observers may be notified that the time of detonation will be at 5:20 A.M. (Pacific Standard Time) for the purpose of planning transmittal of stories, pictures, programs and other material resulting from the test. SEC Wad INFO ON eas | Doe ARCHIVES *