Order number 940406-165953-13 -001-001 page 3 set 5 with 341 of 341 items measured was due to a combination of fission-product and neutron-induced activities, the only important induced activity being due to Na{sup 23} (n,{gamma}) Na{sup 24}. At 1.1, 3.4, and 10.9 hours after zero time, neutron-induced gamma radiation accounted for 1.2, 1.1, 801. KEYWORD (S) Item and 0.8 r/hr of the measured 6.0, BURST 2.2, and 1.2 r/hr. REDWING; CHEROKEE BURST; SOILS; RADIOACTIVATION; YUMA 4 150. 110. REPORT NUMBER PRIMARY TITLE (M) ITR--1602 Fallout contamination from a very-low-yield burst. Project 2.14a/34.8 [of] Operation Hardtack--preliminary report 72. PERSONAL AUTHOR/AFFIL Butler, R.E.; Cowan, M. Jr. 710. CORPORATE SOURCE Sandia Corp., Albuquerque, NM (United States) 371. PUB. DATE (YYMMDD) 590120 34. CLASSIF. LEVEL TEXT Secret 36. CLASSIF. CATAGORY TEXTRestricted Data 950. ABSTRACT Fallout measurements were made on Fig Burst to determine the range of militarily significance fallout intensities produced by a 20-ton-plus 10% surface burst 801. KEYWORD(S) Item on an extended land mass. For the burst environment of Fig Burst, intensities greater than 1 r/hr measured at H + 1 hour will not extend beyond 2600 ft downwind. Levels greater than 100 r/hr at H + 1 hour are estimated to extend less than 1000 ft downwind and 150 feet crosswind. From data obtained a fallout model will be constructed which will be used to estimate extremes in fallout intensity patterns caused by varying wind conditions and cloud dimensions. HARDTACK; FIG BURST; FALLOUT; RADIOACTIVE CONTAMINATION; DISTANCE; SURFACE BURSTS; LOW-YIELD WEAPONS 5 150. REPORT NUMBER 110. PRIMARY TITLE (M) ITR--1601 High altitude measurements. Program 32 Operation Hardtack--preliminary report [of] 72. PERSONAL AUTHOR/AFFIL Banister, J.R. 710. CORPORATE SOURCE Sandia Corp., Albuquerque, NM (United States) 371. PUB. DATE (YYMMDD) 580800 34. CLASSIF. LEVEL TEXT Secret 36. CLASSIF. CATAGORY TEXTRestricted Data 950. ABSTRACT Data from Teak and Orange bursts of Operation Hardtack are reported in the following spheres of interest: X-ray, total thermal radiation, gamma-ray dose and dose rate, neutron flux, radiofrequency attenuation, burst-produced pressure at ground level, an attempt to 2003200