maybe better than mt weld?, page-5

Low Thorium and Uranium is a HUGE advantage.

Quote from the article on the PEK WEbsite I posted earlier:

Generally associated with carbonatites, as a result of the volcanic activity, the real trick with rare earth is the extraction, particularly as in most cases it is associated with high levels of radioactivity - frequently from uranium and thorium - creating transportation and storage problems.

"Every deposit has its own eccentricities,
but in our case in Tanzania's southern central rare earth zone we have very low radiation so it won't be anything near the problem is it in other mine sites", Hunter said.