Rare Earths are deposits of exotic minerals used in nearly every advanced technology today (wind mills to MRI's). California used to produce the entire world su

Rare Earths are deposits of exotic minerals used in nearly every advanced technology today (wind mills to MRI's). California used to produce the entire world supply until China undercut the price. As demand boomed (prices going way up) and China started using them as a trade weapon so companies started looking for sources in more stable countries.