rep at 30 yd. This dose decreased to 32.2 rep at 600 yd. Along the long axis, the dose varied from 6360 rep at 30 yd to 22 rep at 600 yd. Project 2.9, Gamma Dose Measurements, was a new project approved for the shot. Its objective was to measure gamma dose as a function of time and distance from the device. The basic type of instrument was the NBS film badge. The film badges were displayed along ground lines to give total gamma dose versus distance. Also, they were used in film dosimeter transport devices which exposed individual film badges for known time pertods. The periodic exposure of film badges over an extended time interval permit- ted a determination of the initial and residual dose rates. Film badges are being processed and data are not available at this time. Project 2.10, Residual Radiation, was also created specifically for par- ticipation on Quince and Fig and had the objective of documenting the residual gamma field intensities produced by the surface detonation of the device. The required data were obtained by means of radiological surveys conducted both on the ground by monitoring teams and from the air by means of a probe lowered to a 3-ft height from a helicopter. The resulta indicate the radiation intensities at the Ifp and crater of shot Fig were above 10,000 r/hr at H + 30 min, which would necessitate avoidance of this area by troops ad- vancing at an early time. The area contaminated by fallout to levels of military significance was lesa than expected by a factor of 2.5 according to the present scaling laws. The early decay measurements show that the normal fission product decay rate, t~!?, is not applicable for a period from H + 1 to H + 3 hr. Instead, the decay rate is t~'-®, which ia faster. However between H + 3 and H + 24 hr, the decay rate was only t™°"™which is slower than the normal fission product decay rate. , oe The third newly approved project, Project 2.11, had the mission of making gamma, neutron, and thermal measurements as a function of altitude for this event. A polyethylene balloon was moored 300 ft from ground zero, and appropriate instrumentation was exposed at various altitudes up to 1500 ft by attachment to the balloon mooring cable. Fission foils were too active to count at the EPG and will be counted in the ZI. Film for gamma dose measurements is being developed. Due to mechanical difficulties caused by adverse weather -conditions, no thermal measurements were made. Project 8.7, Thermal Measurements, measured the radiant exposure in cal/em? and the thermal irradiance in cal/cm?/sec at various distances - from surface zero for the subkiloton device. Instrumentation consisted of seven CWL Thermistor Calorimeters located from 150 to 600 ft from surface zero; two NRDL Disk Calorimeters located at 450 and 900 ft from surface zero; and four NML Radiant Exposure Meters located at 350, 450, 600, and 750 ft, respectively. The CWL instrument data were recorded in an instrument shelter 1200 ft from surface zero; the NRDL instruments were self-contained. No data are presently available from the NML meters, which have been forwarded to NML for reading and calibration. The CWL Ther39 ARWLJHI. Ga 38