Mine to Magnet, Without Illusions: Lynas and MP Materials Lead the West-But the Heavy Rare Earth Bottleneck Is Still Real

IIRC, American resources has a joint venture going with a firm who escapes my recollection to use blockchain technology with some form of marker or taggant to establish provenance- I realize that is secondary to sourcing but it sounds like a solution to that part of the equation..
 
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