Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

North Korea’s nuclear test site has collapsed ... and that may be why Kim Jong-un suspended tests
SCMP ^ | 25 April, 2018 | 25 April, 2018

Posted on 04/25/2018 9:58:22 AM PDT by TigerLikesRooster

North Korea’s nuclear test site has collapsed ... and that may be why Kim Jong-un suspended tests

The mountain’s collapse after a fifth blast last fall has led to the creation of a massive ‘chimney’ that could leak radioactive fallout into the air, researchers have found

North Korea’s mountain nuclear test site has collapsed, putting China and other nearby nations at unprecedented risk of radioactive exposure, two separate groups of Chinese scientists studying the issue have confirmed.

The collapse after five nuclear blasts may be why North Korean leader Kim Jong-un declared on Friday that he would freeze the hermit state’s nuclear and missile tests and shut down the site, one researcher said.

The last five of Pyongyang’s six nuclear tests have all been carried out under Mount Mantap at the Punggye-ri nuclear test site in North Korea’s northwest.

One group of researchers found that the most recent blast tore open a hole in the mountain, which then collapsed upon itself. A second group concluded that the breakdown created a “chimney” that could allow radioactive fallout from the blast zone below to rise into the air.

A research team led by Wen Lianxing, a geologist with the University of Science and Technology of China in Hefei, concluded that the collapse occurred following the detonation last autumn of North Korea’s most powerful thermal nuclear warhead in a tunnel about 700 metres (2,296 feet) below the mountain’s peak.

The test turned the mountain into fragile fragments, the researchers found.

(Excerpt) Read more at scmp.com ...


TOPICS: Foreign Affairs; Front Page News; News/Current Events
KEYWORDS: collapse; mtmantap; nknukes; nkorea; nucleartest
Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-8081-83 next last
To: Calvin Locke

Yeah, but that only killed people who were in the USSR space program.

The NK nuke program has apparently poisoned water supplies out to a considerable distance from the testing location due to radionuclide leaching into the groundwater aquifer, as well as by atmospheric releases.

China is very unhappy with NK because of radiation that has come across the border into Liaoning and Jilin provinces. Chinese people have been warned not to eat local produce, including vegetables grown in private plots, balcony gardens, etc.


61 posted on 04/25/2018 12:45:16 PM PDT by Steely Tom ([Seth Rich] == [the Democrat's John Dean])
[ Post Reply | Private Reply | To 53 | View Replies]

To: Magnum44

“we already cant afford what we do have.”

Since when my FRiend?


62 posted on 04/25/2018 12:47:28 PM PDT by Grampa Dave (Democrats are having trouble with their MAMA campaign, (Make America Mexico Again), versus MAGA!)
[ Post Reply | Private Reply | To 36 | View Replies]

To: ctdonath2
Problem is we don’t/didn’t have the lift capacity to get ‘em into orbit.

Not sure that orbit is needed. If a KEP is delivered from the stratosphere or above would it need to be a 20 ton projectile? Terminal velocity would probably be a given and the projectile would be sized for the mission. Could be done without encroaching on their airspace (toss bombing) and if done with stealth tech, what would anybody know except for something that has multiple possible explanations.

No knowledge, just speculation!

63 posted on 04/25/2018 12:48:56 PM PDT by SES1066 (Happiness is a depressed Washington, DC housing market!)
[ Post Reply | Private Reply | To 52 | View Replies]

To: drypowder
Now a high percentage of Fish/sea creatures being caught off the coast of North America have tumorous growths.

Do you mean to tell me that wasn't caviar (fish roe) I ate?

64 posted on 04/25/2018 12:52:37 PM PDT by Pearls Before Swine ("Married with children.")
[ Post Reply | Private Reply | To 23 | View Replies]

To: Magnum44
You care to elaborate then, or do you just like to negate?

Elaborate? Moi?

If I shared my sources, I'd have to kill you...

Seriously, I live in New Mexico - home to Los Alamos Labs, Sandia Labs, and AFOTEC.

People talk. No details, per se, but...

65 posted on 04/25/2018 12:54:04 PM PDT by Crusher138 ("Then conquer we must, for our cause it is just")
[ Post Reply | Private Reply | To 42 | View Replies]

To: Magnum44

Good observation on the hypersonic vs RFG “solutions”.
I’d say that RFG are more for “quiet hits”, like the NK nuke mountain - sure others might figure out what happened, but closer to “plausible deniability” than a hyper-cruise missile.

FYI: launching 3 RFGs via SpaceX Falcon Heavy cost $30M each, or 1 via Falcon 9 for $62M.

The tungsten itself per RFG is around $800,000.


66 posted on 04/25/2018 12:59:01 PM PDT by ctdonath2 (The Red Queen wasn't kidding.)
[ Post Reply | Private Reply | To 60 | View Replies]

To: Grampa Dave

Well, all I can tell you is that I work on some expensive systems for the govt. Money, allocation of it, not having enough to do everything the customer wants, and trying to get to the place where the contractor can justify staying in the business while providing the value the customer needs, its all a balancing act that gets played out. So some programs get funding and others do not. If the customer had unlimited funds, they could get everything they wanted and of course the contractors would be happy to provide everything they want. But limited funds is the reality.

If the Navy had all the money they wanted we would still have a 15 Carrier, 360 ship navy. If the Airforce had all the money it wanted, every airplane would be either an F-22 or a B-2, and anything else would be subcontracted out since all the Air Force really wants to do is fly fighters (had to get that jab in). If the Army got everything it wanted we would have the Spec Ops guys we have today AND the 60 ton tank forces we had during the cold war.

That’s all I am saying. I wont go into specifics regarding space, but the same trades have to occur, and when systems cost a billion dollars each, you just don’t get everything you want.


67 posted on 04/25/2018 1:00:03 PM PDT by Magnum44 (My comprehensive terrorism plan: Hunt them down and kill them)
[ Post Reply | Private Reply | To 62 | View Replies]

To: Calvin Locke

Haliburton/Blackwater/Koch- just my code name designed to aggravate the enemy..


68 posted on 04/25/2018 1:00:33 PM PDT by matthew fuller (Thank God for Donald J. Trump- El Presidente Por La Vida !!)
[ Post Reply | Private Reply | To 48 | View Replies]

To: Crusher138; Magnum44

Well, I’ve run thru the numbers here. It’s cheap to do (maybe $50M per RFG), but the capacity for launch has been quite limited and nearly impossible to conceal. We’d know by now.


69 posted on 04/25/2018 1:03:30 PM PDT by ctdonath2 (The Red Queen wasn't kidding.)
[ Post Reply | Private Reply | To 65 | View Replies]

To: Crusher138

I have spent time at the labs there and know a lot about what goes on there. I also know we don’t have RFG deployed and why, though Ill be willing to admit that a lot of Reagans 80’s star wars work was done at those labs.


70 posted on 04/25/2018 1:05:50 PM PDT by Magnum44 (My comprehensive terrorism plan: Hunt them down and kill them)
[ Post Reply | Private Reply | To 65 | View Replies]

To: SES1066
Terminal velocity

This is the limiting factor for KEP. If you rely on kinetic energy only, did you know that the terminal velocity for even a 1000 kg object the size of a small refrigerator dropped from space (17000 mph orbit speed) is slowed to less than 200 mph by the atmosphere by the time reaches the surface? When you do the sims using the physics, its harder to make a KE weapon effective than it might seem. (This is also why we are well protected against most meteor threats.)

71 posted on 04/25/2018 1:12:43 PM PDT by Magnum44 (My comprehensive terrorism plan: Hunt them down and kill them)
[ Post Reply | Private Reply | To 63 | View Replies]

To: SES1066

Good speculating.
I was fixating on the “tungsten telephone pole” analogy, so followed the numbers re: a 20 ton mass.
Even at 1 ton, lift capacity is a problem - rockets are high-visibility, and I’m sure others have means of getting a good look at a long, thin, mostly featureless satellite that just hangs there.
Then that object disappears from orbit, minutes before a gaping crater appears at a notorious site. Pretty clear what happened, even if it can’t be proven per se.
Anything much less than 1 ton probably fast loses the point/expense of putting it up there. Impact becomes comparable to comparable-cost weapons which can impact much faster (vs awaiting orbital positioning).

Like solar power and EVs, RFGs have their problems but are tantalizingly attractive in their very simplicity (well, to some of us).


72 posted on 04/25/2018 1:12:59 PM PDT by ctdonath2 (The Red Queen wasn't kidding.)
[ Post Reply | Private Reply | To 63 | View Replies]

To: ctdonath2

There is also the issue of my post 71


73 posted on 04/25/2018 1:14:35 PM PDT by Magnum44 (My comprehensive terrorism plan: Hunt them down and kill them)
[ Post Reply | Private Reply | To 69 | View Replies]

To: A Formerly Proud Canadian

Decades... and centuries.

The entire span of our country is less than just the Han dynasty.


74 posted on 04/25/2018 1:29:09 PM PDT by RedStateRocker (Nuke Mecca, deport all illegals, abolish the DEA, IRS and ATF.)
[ Post Reply | Private Reply | To 28 | View Replies]

To: Magnum44

What about turning it into a “Disney Bomb” for that extra oomph?


75 posted on 04/25/2018 1:29:14 PM PDT by Calvin Locke
[ Post Reply | Private Reply | To 71 | View Replies]

To: AppyPappy
Towards Japan? Yikes!

.


76 posted on 04/25/2018 1:29:42 PM PDT by Jeff Chandler (President Trump divides Americans . . . from anti-Americans.)
[ Post Reply | Private Reply | To 9 | View Replies]

To: TigerLikesRooster

There is a pic somewhere on Pinterest that shows Kim Jong-un with the message “If you want to get rid of him, just leak that he has incriminating info on the Clintons”.


77 posted on 04/25/2018 2:20:29 PM PDT by Oatka (tHE)
[ Post Reply | Private Reply | To 1 | View Replies]

To: sarge83

XB37/Still too small, to get the tonnage up and fit the weapon in.


78 posted on 04/25/2018 2:33:47 PM PDT by Empireoftheatom48 (WWG1WGA!)
[ Post Reply | Private Reply | To 57 | View Replies]

To: TigerLikesRooster

Note to President Trump: Kim jong-un is NEVER honest.


79 posted on 04/25/2018 4:25:34 PM PDT by Jack Hammer
[ Post Reply | Private Reply | To 1 | View Replies]

To: libstripper
I noticed that, too. This information could have remained classified. Instead China made it public, and it will make its way into a prestigious journal in Geophysics. China is giving rigorous scientific argument to discourage NK nuclear test. NK could choose to do it someplace else but it will take time to set up the new place. It won't please China, though, because it would be somewhere in that general region where the current site is.
80 posted on 04/25/2018 6:13:31 PM PDT by TigerLikesRooster (dead parakeet + lost fishing gear = freep all day)
[ Post Reply | Private Reply | To 46 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-8081-83 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson