Bangombé, Franceville, Haut-Ogooué Province, Gabon

Precambrian fission reactor 35 km southeast of the Oklo mine (another natural nuclear reactor in the same area), at a depth of 10-12 m. Discussions if the reactor should be saved for research or mined for uranium.
Mining ceased in December 1997.

References:
- Jensen, K. A. & Ewing, R. C. (2001): The Okelobondo natural fission reactor, southeast Gabon: geology, mineralogy, and retardation of nuclear-reaction products. Geological Society of America Bulletin, 113, 32-62.
- Jensen, K.A., Palenik, C.S., and Ewing, R.C. (2002) U 6+ phases in the weathering zone of the Bangombe U-deposit: observed and predicted mineralogy. Radiochim. Acta: 90: 761-769.

- http://www.curtin.edu.au/curtin/centre/waisrc/OKLO/Where/Where.html
- http://www.microtracescientific.com/people/cpalenik/abstracts/Nordic_Jensen_Palenik_etal.pdf