fo (iEDERN LL as kb HeeyINAi de tty —CONFIDENTIAT ATOMLC ENERGY CCMMISSTON DECLASSIPICATION OF INFORMATION RELATING “TOSHOT PINON OF OPERATION HARDTACK Report to the General Manager by the Director of Classification PROBLEM 1. To consider the declassification of the total yield as measured by fireball photography, the fission yield as determined by the radiochemical analysis, and other information necessary to demonstrate that the device to be tested as shot PINON of Cperation HARDTACK is a thermonuclear device producing a relatively small amount of Fallout. SUMMARY 2, At Meeting 1338 on February 28, 1958 the Commission epproved conducting a United Nations observer program as part of Operaticn HARDTACK, This program is to be carried out in connection with shot PINON, UN observers are to be allowed access to information and permitted to make observation and measurements to enable them to determine the degree to which reduced fallout has been achieved. For this purpose the observers will need the following information and the opportunity to make the measurements indicated: | a, The location and scheduled and actual time of shot db, Tae device to be tested is contained in a cylindrical container about 5 feet in diemeter, 12 feet and tong wuich will weigh about § tons including the contents, - + ~RESPRECTER-DatA— data as vy Act of 1954, sofined in“the “ts trans ° Thisdocumencontol ns Hastrts TINGE iy thy Oxy WN? free (CONDE TIDY NSPEMi +f t, » 1954. Unaunttiorized lachpeury seat Jha Mive wd Grima den en mm EN TTT U9 FET iach ;