Yes, the North Koreans never do learn as yet again they were caught with equipment tainted with uranium:

The U.S. found particles of highly enriched uranium on a component used in North Korea’s nuclear program, Japan’s Daily Yomiuri newspaper reported, citing U.S. officials.

The U.S. believes the part, an aluminum pipe used to concentrate nuclear weapons-grade uranium, was imported from Russia, the report said. North Korea, which submitted the pipe to U.S. inspectors in 2007, said the equipment was used for conventional weaponry, the newspaper reported.

An unexpectedly large amount of uranium particles was found on the component, the Yomiuri said, citing Paula Desutter, U.S. assistant secretary of state for verification, compliance and implementation.  [Bloomberg via DPRK Studies]

This is significant because North Korea continues to claim they do not have a secret HEU (Highly Enriched Uranium Program), though evidence continues to mount that they do.  Even Hillary Clinton has gone on record reversing her prior rhetoric that the North Koreans have a secret HEU program.

Now if only David Albright would get the memo.