Amchitka radiobiological program progress report, January 1973--December 1973 Page: 4 of 105
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The Amchitka Radiobiological Program, to collect biological and envi-
ronmental samples for radiometric analyses, began in 1970 and is con-
tinuing. An account of the program from July, 1970, to December, 1972,
has been given in three previous progress reports: Held (1971), Held
(1972), and Held et al. (1973). This report extends the account of
the program through December, 1973.
Recent results of analyses have been appended to previously prepared
tables in Held et al. (1973) and include analyses for: (1) gamma-
emitting radionuclides in air filters, seawater, freshwater, birds,
lichens, terrestrial vegetation, marine algae, marine invertebrates,
marine fish, sea otter, aufwuchs, and freshwater moss and plants;
(2) strontium-90 (90Sr) in rats and birds; and (3) tritium (3H) in
seawater and freshwater. Some tables from the previous reports were
revised by adding data for cerium-144 (144Ce) or europium-155 (155Eu)
and deleting radionuclides such as manganese-54 (54Mn), cobalt-60
(60Co), zirconium-95 (95Zr), or niobium-95 (95Nb), which were either
not present in 1973 or were at levels less than 0.5 pCi per g, dry.
The conclusions from the results of the recent analyses are a reitera-
tion of the results stated in Held et al. (1973); namely, "1) no new
radionuclides are present; 2) the most abundant radionuclides are
naturally occurring beryllium-7 (7Be) and potassium-40 (40K); 3) the
trace quantities of fission products, induced radionuclides, and 3H
present are from world fallout; and 4) a trace of 3H contamination
remains in some Long Shot ponds, as previously reported." It is con-
cluded from the results of analyses of samples collected between
September, 1969, and December, 1973, as reported in this and the three
previous progress reports, that there were no radionuclides of Milrow
or Cannikin origin in the water, plants, or animals of Amchitka Island.
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Nelson, V.A. & Seymour, A.H. Amchitka radiobiological program progress report, January 1973--December 1973, report, May 1, 1974; United States. (https://digital.library.unt.edu/ark:/67531/metadc1024498/m1/4/: accessed April 22, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.