SOMAIR

Geography

Arlit and Akokan are the twin mining towns of SOMAIR. They are situated on the southern border of the Sahara Desert, where uranium is extracted, and are on the western fringe of the Aïr Mountains. They are located 1200 km to the north-east of Niamey, the capital of Niger.

History

Main article: Uranium mining in Niger

The discovery of uranium in Niger dates to 1967. It was discovered at Azelik by the French Bureau de Recherches Géologiques et Minières (BRGM). Studies of its potential and quality were commenced by the French Atomic Energy Commission (CEA). Uranium deposits were also discovered in sandstone formations in other locations in Niger such as Abokurum (1959), Madaouela (1963), Arlette, Ariege, Artois and Tassa/Taza (1965), Imouraren (1966) and Akouta (1967). Yet another company, the Société Minière de Tassa N'Taghalgue (SMTT) assigned its mining rights in 1996 to SOMAIR before it dissolved.

In May 2023, the Niger government and Orano, the restructured successor to Areva, signed an agreement to extend the operational life of the mine by 11 years to 2040.

After the 2023 Nigerien coup d'état, in December 2024, Orano announced that it had "lost operational control" of its mining subsidiary Somaïr in Niger.{{cite news |url=https://www.rfi.fr/fr/afrique/20241204-niger-le-g%C3%A9ant-fran%C3%A7ais-de-l-uranium-orano-annonce-avoir-perdu-le-contr%C3%B4le-de-sa-filiale?utm_medium=social&utm_campaign=x&utm_source=shorty&utm_slink=rfi.my%2FBDB6

In June 2025, the State of Niger decided, during a Council of Ministers meeting, "to nationalize the Société des mines de l'Aïr. According to the Nigerien government, the shares and assets of Somaïr are fully transferred to the State of Niger". In September 2025, following action by Orano to defend its interests, the International Centre for Settlement of Investment Disputes ordered Niger not to sell or transfer uranium from Arlit.

Operations

SOMAIR, like COMINAK, is a subsidiary of Areva. The company's two shareholders are Cogema (now Areva NC) and ONAREM (Office National des Ressources Minieres du Niger). The mine operations conform to the ISO 14001 certification.

Production

The extraction process was started during the late 1970s and early 1980s and involved the building of exclusive leach pad processing operations of the extracted uranium ores, apart from open cut mining. Initially, the Artois deposits were extracted by open cut mining up to 60 m depth with a production rate of 0.30 - 0.35% ore. Lower grade uranium is exploited up to deeper depths of 90 m), but with lower ore extraction rate of 0.20 - 0.25%.

During 2005–06, new leach pads were constructed over the old ones. The new leach pad is capable of handling 17 million tonnes of uranium ore which could yield 1.4 million tonnes of uranium extract per year. For the new leach pad, called a heap leach pad, associated with processing ponds, the design adopted at the SOMAR mining site is 30 m in height. It is built up with 5 layers of 6 m lift each. The leach pad and the pond are built over a layer of 300 mm thick, clay of low permeability. High-density polyethylene (HDPE) of 2 mm thickness is laid over the clay layer. The optimized design adopted envisages minimizing the cut-and-fill earthworks and also ensure pad-drainage slopes to enable gravity drainage "through a solution channel to the ponds". The drainage pipes are perforated and are installed in a "herringbone pattern", in each cell. The collection of drainage water from each cell is achieved by linking them to a collector drainpipe which carries the drained water into the processing ponds. The piping system was fully camouflaged with fill of ore material.

According to the Red Book, the resource potential of the ore was 42,200 tU as of 2010; this includes conventional recovery of 42,200 tU of 0.25%U, and by heap leaching another 5500 tU at 0.07%U. The production of the SOMAIR mines have progressively increased from 1808 tU in 2009, 2726 tU in 2011 and 3065 tU in 2012. Since 2010, the production from SOMAIR Lixi mine has been 1000 tU/yr. The mill capacity has also been upgraded to handle 3000 tU/year. This operation has an annual production rate of 1.4 Mt of low-grade ore with a yield of less than 0.1%U. The processed ore is converted into concentrates and then transported to the ports of Benin. From these ports, they are shipped to Comurhex in France.

References

References

1. (21 August 2012). "RPT-Work resumes at Areva Somair uranium mine in Niger". [[Reuters]].
2. "Uranium in Niger". World Nuclear Association.
3. (1 March 2002). "Niger: 2001 Article IV Consultation, the Second Review and Second Annual Program Under the Poverty Reduction and Growth Facility Arrangement, and Request for Interim Assistance Under the Enhanced Initiative for Heavily Indebted Poor Countries--Staff Report; Public Information Notice and News Brief on the Executive Board Discussion". International Monetary Fund.
4. "Potential Use of Radioactively Contaminated Mining Materials in the Construction of Residential Homes From Open Pit Uranium Mines in Gabon And Niger". Directorate-General For External Policies of the Union Directorate B, Policy Department.
5. "Left in the dust: AREVA's radioactive legacy in the desert towns of Niger". Greenpeace.
6. "Akokan and Arlit, Niger".
7. (3 August 2010). "Uranium 2009: Resources, Production and Demand". OECD Publishing.
8. (4 May 2023). "Niger: Uranium mine set to operate until 2040".
9. (19 June 2025). "Le Niger nationalise la filiale du géant français de l'uranium Orano, un nouvel acte marquant la rupture du régime avec Paris".
10. (1 December 2025). "Niger reveals plans to sell Somaïr uranium".
11. "SOMAIR Uranium Mine Heap Leach Pad". SRK Consulting.com.