"A satellite picture of massive clouds that caused speculation that an explosion took place in Ryanggang Province, North Korea. Unification Minister Chung Dong-young looks at the picture taken in the morning on Sept. 9 and other related documents at a parliamentary unification, diplomatic and commercial committee meeting."
http://english.chosun.com/w21data/html/news/200409/200409170025.html"Pictures taken by the South Korean satellite Arirang-1 Sept. 26, 2000 (left) and Sept. 15, 2004, show a part of Kimhyongjik County in North Korea`s Yanggang Province where a massive explosion was reported last Thursday. The top square shows Huchang and the square below shows Yeongjeodong.
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http://www.koreaherald.co.kr/SITE/data/html_dir/2004/09/16/200409160026.asp
"A picture on the assumed explosion site in North Korea's Ryanggang Province taken by satellite Arirang 1 at 10: 59 a.m. Wednesday. /provided by the Korea Aerospace Research Institute"
http://english.chosun.com/w21data/html/news/200409/200409150034.html
"Signs Indicate No Explosion Occurred in N. Korea's Kim Hyong-jik County
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In fact, it has been learned that Korean and U.S. intelligence officials have virtually concluded that the problematic black cloud detected on satellite photos was a strange shaped cloud resulting from a natural phenomenon, and that there was no explosion in the area around Ryanggang Province.
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The Korea Earthquake Research Center said, "On Aug. 21, we detected seismic waves of 2.7 on the Richter scale from the Samsu region of Ryanggang County, but after that, the only record we have of seismic waves from the whole of Ryanggang Province were seismic waves we detected at 11:24 p.m. Sept. 8 from the Mt. Baekdu area, about 100~120km away from the suspected blast site."
Because of this, government officials explain that it was only natural that the Arirang 1 satellite would fail to detect signs of an explosion when it succeeded in taking photographs of Kim Hyong-jik County, Ryanggang Province on Wednesday.
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On Aug. 21, seismic waves measuring 2.7 on the Richter scale were detected coming from the Samsu region, which has been designated by the North Korean authorities at the site of the Samsu Hydroelectic Power Station."
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