ii LIST OF FIGURES Pare Figure 13 Sr?° Surface Air Concentration, NRL, Vashingtony D.C... « « Figure 23 Variation of Total air Flcw with Time for Large Blower Due to Dust Loading of Filter, NRL, ‘Vashington, D.C... 2. oe wo @ Figure 33 Sr90 Surface Air Concentration: Kodiak, Alaska, Port Lyautey, F.M., Yokosuka, Japan 2. « e ee oo ew oe eo ew wo oe Ficure ke Sr?0 Fallout History, Chicago Milkshed irea...s cece 16 Figure 5 Sr70/Ca Ratio, Fresh Milk from Chicago Dairies. «se. 2h LIST OFT..BIES Table 1: 590 Deposited by 1953 and 195) Chicago Rains » «e+eese«ee Table 2: DP Sr°0/Pt? Deposited by 1955 Rains and Snows. . es eee 12 Table 3: Solubility of Sr?70 in Rains 2... ee ee eee 15 Table \: Available Sr9O0 in 1955 Chicago liilkshed Soils ...eecece 19 Table 5: Comparison of Sr?0 Level in Related jilfalfa and Soil Samples, 22 Table 6: Sr90 Content of Foreign Soils . «2 6« ese eee 27 " NYOO ° ee @ @ @ #398