The sheer volume of money and work and the technical difficulties of putting a 15cm thick sandwich of metal underneath a block make me doubt the veracity of the article.<p>Especially coupled with the factual error &quot;separates into the rare-earth Sodium Sulfate&quot;. Sodium is nowhere near a rare-earth metal and Monazite is a Cerium&#x2F;Lanthanium phosphate that contains lots of other elements, Uranium and Thorium among them.