A old $2 million coal mine in Wyoming is now the biggest find for rare earth elements in the US since 1952. It could be worth as much as $37 billion says this report in WSJ. Randall Watkins the son of Ashland Oil founder the elder Watkins, runs Ramaco, the $600 million metallurgical coal company that bought this coal mine. He says he has learned lessons from his father that will help him build on this rare earth elements discovery for commercialization.