INDEX
activity, 30, 33
Niobium-95 systems (9%SNb-%5Zr)
activity ratios in atmosphere over
Pacific Northwest, 434
cencentration in air at Richland,
Washington, 206-7
content in atmosphere over Pacific
Northwest, 433
determination by gamma ray spectros-
copy, 185, 198-99
determination in rainwater, 569, 574,
575, 577, 578
determination in surface air, 498
distribution with altitude in 1962 and
1964, 211
distribution with latitude in stratosphere, 212
939
657
Norwegian Radium Hospital, Oslo
**Cesium-137 Body Burdens and Their
Variations in Norwegian School
Boys’’, 859-64
“Correlation Between Precipitation and
Amountof 1371Cs in Milk in Norway”’,
865-76
Nova Friburgo, Brazil
debria deposition data, 794
strontium-90 deposition data, 796
Nuclear reactors
environmental survey of Enrico Fermi
Atomic Power Plant, 728
fractionation of released fission
products, 248-49
environmental level studies, 235-38, 242
fallout levels in 1962-1964, 196
fractionation predictions for, 9-10
ground surface amounts at various
times in 1963 and 1964, 188, 195
precipitation effects on deposition,
214-15
Niobium-97
contribution to total fission product
activity, 30, 33
Niobium ions
diffusion in fused silicates, 13-14
Noble gases
(see Rare gases)
Nord, Greenland
tritium concentrations since 1961, 651,
657
Norsk Hydros Institute for Cancer
Research, Oslo
‘Correlation Between Precipitation and
Amountof 1871Cs in Milk in Norway”’,
865-76
North America
tritium concentrations since 1961, 655-
56, 667-68
North Carolina
environmental gamma ray levels, 240
tritium concentrations since 1961, 655-
56, 662
Northern hemisphere.
circulation changes with height in
atmosphere, 694-95
comparison with southern, in 9Sr content
of air, 616, 623-24, 625-26
debris deposition correlations with
southern hemisphere, 695-96
meteorological differences from
southern hemisphere, 687
stratospheric sampling, 609-13
tritium concentration of atmosphere, 672
Northwest Territory
tritium concentrations since 1961, 655-
56, 672
Norway
cesium-137 body burden in school
boys, 859-64
cesium-137 content in milk, 865-76
tritium concentrations since 1961, 651
°
Oatmeal
strontium-90 content of, in Argentina,
851-53
Ocala, Florida
tritium concentrations since 1961, 655,
662
Ocean-continent effect, 791, 792, 796-97
Oceans
tritium content of air masses from, 692
tritium content of rain in 1963, 673
Office of Civil Defense
cooperative program for Small Boy shot
fallout study, 44-71
Oils
self-labeling with tritium, 148
Oklahoma
beta activity in rain from storms, 532-65
Beta Surface Network, 526-27, 533
strontium-89/%Sr ratio in storm
samples, 588-90
Oklahoma City, Oklahoma
addition to 80th Meridian Air Sampling
Program, 617
Oklahoma, University of
“Radioactivity in Precipitation: Case
Studies from the 1964 Spring
Season”’’, 532-65
“University of Oklahoma Program for
Studies of Convective Storms and
Scavenging of Radioactive Particles’’,
523-31
Onions
strontium-90 content of, in Argentina,
851-53
Operation Dominic I
(see Dominic I Operation)
Operation Redwing
(see Redwing Operation)
Orange burst
debris, stratospheric half-residence
time, 325
radioactivity in stratosphere from,
419, 420
rhodium-102 tracer studies, 405-8
Organic compounds
self-labeling with tritium, 148
Orographic lifting, 583, 600