Interlayer oxidized zone and argillite-sisandstone-argillite sequence occur in red clastic rock formation with ideal artesian and circulating system of ground water.
A spokesperson for the French company Areva said a team was going to assess the damage of the uranium sites of Arlit, but production has stopped for now.
The assault comes just over a week after simultaneous suicide attacks to the military barracks and the French-administered uranium mine in Niger. Mary Harper reports.
Large deposits of coal and natural gas, as well as a three percent chunk of the planet's oil reserves and 40 percent of its uranium mean that Kazakhstan's people could be rich.