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N. Korea digging tunnels for likely nuclear test
SEOUL — North Korea is digging tunnels at a site where it has launched two nuclear tests, suggesting it is preparing a third, the South's Yonhap news agency said on Sunday, a development which would trigger concern across the region. The North was excavating several tunnels before picking the most suitable, Yonhap said, citing an unnamed South Korean government source.

"South Korean and U.S. intelligence authorities have spotted North Korea building several other underground mines at Punggye-ri where it had run two nuclear tests," the unidentified source was quoted as saying. "It is judged to be clear evidence of preparing for a third nuclear test."

The North was likely to conduct a plutonium-fueled test, mindful of opposition from China to the uranium enrichment, the source told Yonhap.
Posted by: Steve White 2011-02-20
http://www.rantburg.com/poparticle.php?ID=316522