A Chinese scientist express concern that radioactive waste could bleed from cracks or holes at the site. And be blown across the border into China. As per the SCMP report 200 Died in North Korea Nuclear Test Site due to Collapse.
TV Asahi reported that Around 200 people may have died when tunnels collapsed at a North Korean nuclear test site in October. Citing unidentified people familiar with North Korean matters.
Kim Jong Un’s regime detonated an underground nuclear device near the Punggye-ri site in northeast North Korea on 3rd September.
North Korea Nuclear Test Site
Setting off an earthquake with a magnitude of about 6.3 that was felt as far away as China. About 100 people caught in a collapsed tunnel around 10th October. While the others trapped in a further collapse during a rescue attempt, reported by TV Asahi.
Though China issue warning to North Korea on 20th September that further nuclear tests could blow the top off a mountain and spark a potential catastrophic collapse at the site. The South China Morning Post reported 28th Octber. Researchers from the Chinese Academy of Sciences’ Institute of Geology and Geophysics briefed a North Korean delegation in Beijing about the threat. The paper reported that citing senior Chinese geologist Zhai Mingguo.
Two days after the briefing in Beijing, North Korean Foreign Minister Ri Yong-ho announced at the United Nations in New York that Pyongyang might consider detonating a “most powerful” hydrogen bomb over the Pacific Ocean.
On October 17, a study published by the US-Korea Institute at Johns Hopkins University. It Published on the 38 North web site suggested the sixth underground test at the site had caused “substantial damage to the existing tunnel network under Mount Mantap”.
North Korea claims the September 3 test beneath Mount Mantap was of a hydrogen bomb. With monitors suggesting the detonation was equivalent to an earthquake with a magnitude of 6.1 on the Richter scale.
Some analysts put the yield of the weapon as high as 280 kilotons. While seismologists picked up signs of underground collapses in the hours and days after the blast.