Thanks for throwing light on Thorium....... Your mention of Thorium remind me of my School lecture by one of our Teacher when I was in Fifth Class (around 9 year old ). Our teacher told us their is lot of Thorium on our Kerla coast and other parts of India. He also mentioned that US need that Thorium. But India refuse to part its Thorium. Now I am going to be Thirty year in this September..........Still we are waiting for magic to happen...Waiting for some scientist to convert that thorium into Nuclear fuel.