I think it would be best to get red mud samples from several potential locations and see which makes the best economic sense. The most alumina and valuable bi-products. Plus avoiding any materials which create expenses such as uranium or thorium. I know Ur is valuable if the concentration is high enough but it is more likely just to be a major nusiance if present.
On another topic. People often express the opinion that spamers are here to attack orbite by deluting good posts with garbage. However if you go to their personal profile and thier content you will see they post on all threads especially active ones. They are paid to find new subscribers and I believe this is their only motivation usually there is a code in their urls beyond just the website they wish you to visit.