The
four are among 30 former residents of Kilju county, an area in
North Korea that includes the nuclear test site Punggye-ri, who
have been examined by the South Korean government since October,
a month after the North conducted its sixth and most powerful
nuclear test, Unification Ministry spokesman Baik Tae-hyun told
a news briefing.
They were exposed to radiation between May 2009 and January
2013, and all defected to the South before the most recent test,
a researcher at the Korea Atomic Energy Research Institute,
which carried out the examinations, told reporters.
North Korea has conducted six nuclear bomb tests since 2006, all
in tunnels deep beneath the mountains of Punggye-ri, in defiance
of U.N. Security Council resolutions and international
condemnation.
The researcher cautioned that there were a number of ways people
may be exposed to radiation, and that none of the defectors who
lived had lived in Punggye-ri itself showed specific symptoms.
A series of small earthquakes in the wake of the last test -
which the North claimed to be of a hydrogen bomb - prompted
suspicions that it may have damaged the mountainous location in
the northwest tip of the country.
Experts warned that further tests in the area could risk
radioactive pollution.
After the Sept. 3 nuclear test, China’s Nuclear Safety
Administration said it had begun emergency monitoring for
radiation along its border with North Korea.
And in early December, a state-run newspaper in China’s Jilin
province, which borders North Korea and Russia, published a page
of “common sense” advice on how readers can protect themselves
from a nuclear weapons attack or explosion.
Cartoon illustrations of ways to dispel radioactive
contamination were also provided, such as using water to wash
off shoes and using cotton buds to clean ears, as well as a
picture of a vomiting child to show how medical help can be
sought to speed the expulsion of radiation through stomach
pumping and induced urination.
(Writing by Josh Smith; Editing by Nick Macfie)
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