I read a very interesting article about this u235 deposit found in Africa. Everything I have read about it suggest that some of the components needed for this to naturally occur can not exist with out human intervention. The water involved in the nuclear reaction must be extremely pure. Even a few parts per million of contaminant will “poison” the reaction, bringing it to a halt. is there any possible natural explanation? http://www.scientificamerican.com/article/ancient-nuclear-reactor/ https://www.deepdyve.com/lp/springer-journals/the-oklo-phenomenon-RA0Na6j0gD thanks for you input, any ideas on this would be greatly appreciated.