Kratos, your clan story is stupid and makes no sense.
Also, Gallium isn't found as an ore, traces of it are found in other ores, Uranium is slightly radioactive and is immensely heavy, the radiation being alpha and gamma, a person would probably get radiation poisoning after a long time of being so near the source. Also the fact that there would be Uranium dust everywhere, the people would be constantly inhaling and eating alpha radiation.
meh I got bored, had nothing to do but complain.