I was also curious, so I did some digging and found this article: http://www.sfgate.com/opinion/article/U-S-rare-earth-mine-revived-4057911.php http://www.sfga

I was also curious, so I did some digging and found this article: http://www.sfgate.com/opinion/article/U-S-rare-earth-mine-revived-4057911.php http://www.sfgate.com/opinion/article/U-S-rare-earth-mine-re...