Rare Earths Part 2: Seeking Untapped Deposits

The latest "gold rush" is a little less glittery and a lot more grey. This time the search is for rare earth elements (REEs), used in everything from microchips to MRIs. China currently controls 90% of the world supply, but that's about to change as companies around the globe invest in rare earth production.

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Rare Earth Elements Part 2: The New Gold Grey Rush – Seeking out untapped rare earth deposits (PDF, 877kb)