clear
Friday May 22nd, 2015 7:41PM

US experts: NKorea can likely build key nuke parts

By The Associated Press
SEOUL, South Korea (AP) -- North Korean scientists are able to build crucial equipment for uranium-based nuclear bombs on their own, cutting the need for imports that had been one of the few ways outsiders could monitor the country's secretive atomic work, according to evidence gathered by two American experts.

The experts say material published in North Korean scientific publications and news media shows that Pyongyang is mastering domestic production of essential components for the gas centrifuges needed to make such bombs. The development further complicates long-stalled efforts to stop a nuclear bomb program that Pyongyang has vowed to expand, despite international condemnation.

If Pyongyang can make crucial centrifuge parts at home, outsiders can't track sensitive imports. That could spell the end of policies based on export controls, sanctions and interdiction that have been the centerpiece of international efforts to stop North Korea's nuclear program over the last decade, Joshua Pollack, a Washington-based expert on nuclear proliferation, said in remarks prepared for delivery Wednesday at a Seoul symposium and provided in advance to The Associated Press.

"If they're not importing these goods in the first place, then we can't catch them in the act," said Pollack, who gathered the evidence with Scott Kemp, an expert on centrifuge technology at the Massachusetts Institute of Technology. "We won't necessarily see anything more than what the North Koreans want us to see."

The state of North Korea's nuclear program is of vital concern to Washington because Pyongyang wants to build an arsenal of nuclear-armed missiles that can reach American shores. The North has conducted three nuclear tests of apparently increasing power since 2006, most recently in February, and it is believed to have a handful of crude plutonium-based bombs. Many experts estimate, however, that Pyongyang has not yet mastered the miniaturization technology needed to mount a warhead on a long-range missile.

Fuel for North Korea's plutonium bombs has been made in a reactor that is large and easily monitored. But uranium-based weapons are more difficult for outsiders to investigate because the centrifuges needed to enrich uranium for bombs can be easily hidden away from satellites and prying inspectors.

The United States and others long suspected North Korea was clandestinely building a uranium program, despite denials from Pyongyang. U.S. officials confronted North Korea in 2002 with claims its scientists were pursuing uranium enrichment, sparking a nuclear crisis. In a reversal, visiting Americans were shown in November 2010 what they called a sophisticated, modern uranium enrichment facility with 2,000 centrifuges at the North's main nuclear facility.

International sanctions barring nuclear-weapons-related shipments to North Korea did not stop its progress even when it relied on imported equipment, but the U.S. had some success tracking the parts allegedly used in the program. In 2007, for instance, then-U.S. nuclear envoy Christopher Hill said Washington had evidence that Pyongyang had bought equipment used only for uranium enrichment.

News media reports and unclassified government documents showed North Korea imported large amounts of centrifuge parts in the early 2000s, Pollack said, but an apparent dearth of observed imports since then suggests that Pyongyang is making the necessary components at home. He said the know-how for domestic production of key parts appears to have been in place no later than 2009.

Pollack said he and Kemp found "strong and clear" evidence in state media photographs taken inside North Korean factories of specialized lathes that produce very strong metal cylinders needed for centrifuges. He also spoke of accounts in North Korean propaganda and technical journals of iron and steelmaking consistent with the production of an extremely hard steel alloy that can resist high rotational speeds in centrifuges, although the final step of the process wasn't described.

Pollack said their research also found scientific reports and patent awards describing work on technologies for crucial centrifuge parts. Those include vacuum pumps that remove air from centrifuges and pipes before uranium-bearing gas is added and electronic devices that control the speed of the electric motor in the base of each centrifuge.

North Korea's nuclear program is cloaked in secrecy and treated domestically as a national treasure. The small, impoverished country says it must defend itself from U.S. machinations to overthrow its political system.

It's not clear whether North Korea has made bomb-grade uranium, and Pyongyang says the program is for peaceful, energy-generating purposes. But analysts strongly suspect that, even beyond the facility Americans toured in 2010, Pyongyang has other uranium enrichment facilities that could be producing large amounts of weapons-grade material.

Earlier this year, during a barrage of threats aimed at Washington and Seoul, Pyongyang vowed to resume all its nuclear fuel production. Recent satellite imagery appears to show that North Korea was restarting its plutonium reactor.
© Copyright 2015 AccessNorthGa.com
All rights reserved. This material may not be published, broadcast, rewritten, or redistributed without permission.
S&P 500 index has its best year since 1997
The stock market closed out a record year with more all-time highs on Tuesday, giving U.S. indexes their biggest annual gains in almost two decades.
6:56PM ( 1 year ago )
Colorado readies for 'Green Wednesday' pot sales
Police were adding extra patrols around pot shops in eight Colorado towns that plan to allow recreational sales to anyone over 21 on Jan. 1.
1:52PM ( 1 year ago )
Kerry seeks framework for Mideast peace talks
A senior State Department official says Secretary of State John Kerry will try this week to get Israel and the Palestinians to agree on a framework for negotiating a final peace agreement, yet cautions against raising expectations for Kerry's latest round of shuttle diplomacy.
1:35PM ( 1 year ago )
U.S. News
Ethics laws set to take effect Jan. 1 in Georgia
After dominating much of the legislative session, a set of major ethics reforms is scheduled to take effect Jan. 1.
7:04PM ( 1 year ago )
Sex offender held in Hall County for failing to register
A 47-year-old man was booked into the Hall County Jail Tuesday, being held without bond for allegedly failing to register as a sex offender, his second such arrest.
6:09PM ( 1 year ago )
Pharmacy robberies may involve same suspect
Oakwood Police Tuesday afternoon released details in a pharmacy robbery they're investigating, similar to one that happened in the Hall County Tuesday morning.
5:46PM ( 1 year ago )
Local/State News
Feds announce test sites for drone aircraft
The Federal Aviation Administration announced six states on Monday that will develop test sites for drones, a critical next step for the march of the unmanned aircraft into U.S. skies.
2:23PM ( 1 year ago )
Congress letting 55 tax breaks expire at year end
In an almost annual ritual, Congress is letting a package of 55 popular tax breaks expire at the end of the year, creating uncertainty - once again - for millions of individuals and businesses.
2:21PM ( 1 year ago )
Feeling US snub, Saudis strengthen ties elsewhere
Increasingly vocal in its frustration over U.S. policies in the Mideast, Saudi Arabia is strengthening ties elsewhere, seeking out an alignment that will bolster its position after it was pushed to the sidelines this year.
4:34PM ( 1 year ago )
Politics
Obama again avoids calling 1915 Armenian killings 'genocide'
WASHINGTON (AP) — President Barack Obama will once again stop short of calling the 1915 massacre of Armenians a genocide, prompting anger and disappointment from those who have been pushing him to ful...
1:00PM ( 1 month ago )
Ex-NFL star Hernandez convicted of murder, sentenced to life
FALL RIVER, Mass. (AP) — Former New England Patriots star Aaron Hernandez was convicted of first-degree murder and sentenced to life in prison Wednesday for a deadly late-night shooting, sealing the d...
8:54PM ( 1 month ago )
Clinton kicks off 2016 campaign online, heads next to Iowa
WASHINGTON (AP) — Hillary Rodham Clinton jumped back into presidential politics on Sunday, making a much-awaited announcement she will again seek the White House with a promise to serve as the "champi...
7:56PM ( 1 month ago )
Hall, White, Jefferson schools recognized nationally for use of technology
Three school districts in northeast Georgia - Hall, White, and Jefferson - have received national recognition for their use use of innovative technologies. They earned top spots in the Center for Digital Education's and the National School Boards Association's 10th annual Digital School Districts Survey.
By Staff
1:00PM ( 1 month ago )
US Capitol lockdown lifted after man fatally shoots himself
WASHINGTON (AP) — A precautionary lockdown of the U.S. Capitol was lifted after about two hours Saturday following a suicide by a man carrying a protest sign.The man died after shooting himself on the...
6:15PM ( 1 month ago )