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Johnston Island
Postoperationsal monitoring is in process at the time of writing this report.
No fission products were identifiable as result-
ing from the Christmas Island portion of Operation Dominic.
It is
not expected that there will be more fission products at Johnston
Island than at Christmas Island 2/
Other Islands
Traces of radioactivity were detected in air samples and in
precipitation in Hawaii, on Christmas Island and Malden Island.
No radioactive fallout identifiable from Operation Dominic events
was detected on Canton Island, Tongatabu Island, Tahiti, Wake
Island, Midway Island, French Frigate Shoals and Kwajalein Island.
Postoperational Samples
Data on the levels of radioactivity found in selected samples
collected during the postoperational period are presented in
Tables IV and V.
The gross beta activity level in food is rela-
tively unchanged from the level in the preoperational samples.
DOE ARCHIVE
2/
The launching pad on Johnston Island (approximately 1000 foot
radius) was contaminated by scattered fissionable material,
following the destruction of a device after a missile malfunction on July 25, 1962. The levels of alpha contamination in
this area exceeded the permissible limits; thus, cleanup of
the area was required. Cleanup consisted of decontaminating
equipment, scraping the top layer of soil of the areas which
were highly contaminated and sealing the contamination on
puildings with layers of concrete or paint. The decontaminsation was completed by mid-August.
FY
65