There are REEs in them thar hills
Privately-held SRE Minerals on Wednesday announced the discovery in North Korea of what is believed to be the largest deposit of rare earth elements anywhere in the world.
SRE also signed a joint venture agreement with the Korea Natural Resources Trading Corporation for rights to develop REE deposits at Jongju in the Democratic People’s Republic of Korea for the next 25 years with a further renewal period of 25 years.
http://www.mining.com/largest-known-rare-earth-deposit-discovered-in-north-korea-86139/