"IT’S A LITTLE KNOWN FACT THAT THE UNITED STATES WAS ONCE THE LARGEST PRODUCER OF RARE EARTHS IN THE WORLD, AT THE MOUNTAIN PASS MINE IN CALIFORNIA"

https://www.mining.com/web/us-lost-plot-rare-earths/#:~:text=Over%20the%20next%20two%20decades,rare%20earth%20mining%20industry%20collapsed.&text=A%20flood%20of%20Chinese%20rare,moved%20their%20operations%20to%20China.

"IT’S A LITTLE KNOWN FACT THAT THE UNITED STATES WAS ONCE THE LARGEST PRODUCER OF RARE EARTHS IN THE WORLD, AT THE MOUNTAIN PASS MINE IN CALIFORNIA"

https://www.mining.com/web/us-lost-plot-rare-earths/#:~:text=Over%20the%20next%20two%20decades,rare%20earth%20mining%20industry%20collapsed.&text=A%20flood%20of%20Chinese%20rare,moved%20their%20operations%20to%20China.