COLLAPSE OF NUCLEAR TUNNEL IN NORTH KOREA

KIM’S DISASTER 

North Korea nuclear tunnel COLLAPSES ‘killing at least 200 people’ amid fears of a massive radioactive leak

The collapse happened at the Punggye-ri nuclear test site in the country’s north-east on October 10, according to reports

A TUNNEL at an underground North Korea nuclear site has collapsed with up to 200 people killed, according to reports.

The collapse happened at the Punggye-ri nuclear test site in the north-east of the country on October 10, according to Japan’s TV Asahi.

 The Punggye-ri test site in North Korea is carved deep into Mount Mantap, as these file images show

THE SUN
12
The Punggye-ri test site in North Korea is carved deep into Mount Mantap, as these file images show

The disaster has prompted fears of a massive radioactive leak which could spark a Chernobyl- or Fukushima-style disaster.

A North Korean official said the collapse happened during the construction of an underground tunnel, South Korea’s Yonhap news agency reports.

The accident is believed to have been caused by Kim Joing-un’s sixth nuclear test which weakened the mountain, according to the report.

 The mountain where the test site is hidden is seen before the last nuclear test

PLANET LABS, INC
12
The mountain where the test site is hidden is seen before the last nuclear test
 Satellite images show Mount Mantap pock-marked with craters from landslides after the last nuclear test

AIRBUS DS / SPOT IMAGE
12
Satellite images show Mount Mantap pock-marked with craters from landslides after the last nuclear test
 A close-up of a subsidence crater show scarring from landslides after the tests

AIRBUS DS / SPOT IMAGE
12
A close-up of a subsidence crater show scarring from landslides after the tests
 Another image shows where the nuclear tests are believed to have taken place

PLANET LABS, INC.
12
Another image shows where the nuclear tests are believed to have taken place
blob:https://www.thesun.co.uk/d13080dd-a958-47d2-a282-b415c82cc4b7
It was reported earlier this year that the mountain under which the base is believed to be hidden was at risk of collapsing and leaking radiation into the region.

Experts said if the peak crumbles, clouds of radioactive dust and gas would blanket the region, the South China Morning Post reported.

The Punggye-ri test site is carved deep into the side of Mount Mantap.

Geophysicist Wen Lianxing and his team at the University of Science and Technology of China in Hefei, Anhui province, said they were “confident” underground detonations were occurring underneath the mountain.

 A satellite image taken on April 12, 2017 of a North Korean Punggye-ri test site

PLEIADES CNES/AIRBUS DS/38 NORTH/SPOT IMAGE
12
A satellite image taken on April 12, 2017 of a North Korean Punggye-ri test site
 North Korea state media celebrates its missile capability

12
North Korea state media celebrates its missile capability
 Satellite images show the area around North Korea's Punggye-ri nuclear test site

REUTERS
12
Satellite images show the area around North Korea’s Punggye-ri nuclear test site
 Punggye-ri is seen in commercial satellite imagery taken April 12, 2017

REUTERS
12
Punggye-ri is seen in commercial satellite imagery taken April 12, 2017

They posted an analysis of data collected from more than 100 seismic monitoring sites across China.

This has narrowed down the location of Pyongyang’s nuclear tests with a margin of error of just 100m. They’ve all been under the same mountain.

Seismic data showed the underground test triggered an earthquake of magnitude 6.3, around ten times more powerful than the fifth test a year ago.

 

 Pyongyang released pictures of North Korean leader Kim Jong-un with what state media said was a new type of hydrogen bomb

12
Pyongyang released pictures of North Korean leader Kim Jong-un with what state media said was a new type of hydrogen bomb

Nuclear war may break out any moment’ North Korean Deputy Ambassador delivers warning at United Nations

Satellite images showed the blast caused numerous landslides around the Punggye-ri test site, according to the Washington-based 38 North monitoring project.

But Chinese nuclear weapons researcher and chair of the China Nuclear Society Wang Naiyan told the Morning Post a collapse could spark a major environmental disaster.

He said: “We call it ‘taking the roof off’. If the mountain collapses and the hole is exposed, it will let out many bad things.

“A 100 kiloton bomb is a relatively large bomb. The North Korean government should stop the tests as they pose a huge threat not only to North Korea but to other countries, especially China.”

North Korea’s Kim Jong Un celebrates with scientists after nuclear tests

Satellite photos taken just a day after the blast reveal new gravel and scree fields shaken loose by the blasts at an elevation of about 2205m.

Analysts said these appeared more numerous and widespread than those caused by previous detonations — which would be in keeping with the increased size of the bomb.


WHAT A WRONG UN North Korea latest news – What nuclear weapons does Kim Jong-un have and what has Donald Trump said about the ‘rocket man’?


Wang said there are limited mountains in North Korea that are “suitable” to conduct a nuclear test.

He said if the North had simply drilled into the side of the mountain, this increased the risk of “blowing the top off”.

News of the tunnel collapse comes after it emerged Russia and the US have both flown nuclear bombers near the country as tensions grow over Kim’s nuke threats.


Why did North Korea test its H-bomb underground?

12

Nuclear devices are often tested underground to prevent radioactive material released in the explosion reaching the surface and contaminating the environment.

This method also ensures a degree of secrecy.

The release of radiation from an underground nuclear explosion – an effect known as “venting” – would give away clues to the technical composition and size of a country’s device.

How exactly does the underground test work?

12

A test site is carefully geologically surveyed to ensure suitability – usually in a place well away from population centres.

The nuclear device is placed into a drilled hole or tunnel usually between 200-800m (650-2,600ft) below the surface, and several metres wide.

A lead-lined canister containing monitoring equipment is lowered into the shaft above the chamber.

The hole is then plugged with gravel, sand, gypsum and other fine materials to contain the explosion and fallout underground.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s