There is no apparent significant difference between the locations, although there is conSiderable variation in fallout level from place to place. The variation does not seem to be related to precipitation or any other known variable. Windsor Locks Bloomfield ae Podunk Hartford West Hartford x : © ' X Manchester Marholin Bldg. wy Brainard Field ——— oo Newington @ Shuttle Meadow Res.» N Scale of Miles 0 3 10 Fig. 14— Pot fallout collections in the Hartford area. ©, pot fallout collecting stations; x ,rain measurementstations. 6.4 SrIN ANTARCTIC SNOW Certain snow cores and surface snow samples werecollected in the Antarctic in early 1955. The Sr® determinations on these samples are reported in Table 63. A number of additional samples for both Sr*° and tritium analysis have been collected during the present International Geophysical Year operations in the Antarctic, but analytical data are not yet available. 6.5 Sr IN U. S. WEATHER BUREAU POLAR OPERATIONS SNOW SAMPLES Analyses for total beta activity, Sr®®, and Sr® were carried out on melted snow samples forwarded to HASL through the U. S. Weather Bureau. These samples were collected during the spring and summer of 1956 in conjunction with a U. S. Weather Bureau Polar Operations Project. The data are shown in Table 64. 6.6 Sr” IN NEVADA SOIL SAMPLES A group of soils collected in Nevada during 1953 and 1954 were submitted to HASL for Sr® determination by Dr. Kermit Larson, Atomic Energy Project, University of California in West Los Angeles. The results of these analyses are reported in Table 65. 6.7. Sr® IN HAWAIIAN AIR SAMPLES A series of air samples have been taken in Hawaii on Mount Haleakala and Mauna Loa. The altitudes are about 10,000 ft, and the samples were collected by Dr. Hans Pettersson of Sweden, whose basic interest is in meteoric dust. The locations are quite free from terrestrial dust and are, therefore, of interest in sampling both for meteoric debris and radioactive particulates. The results of these measurements are given in Table 66. 137 avert itats: