Interlayer oxidized zone and argillite-sisandstone-argillite sequence occur in red clastic rock formation with ideal artesian and circulating system of ground water.
But an unexpected fact was noted: certain minerals( pitchblende, chalcolite, autunite) had a greater activity than might be expected on the basis of their uranium or thorium content.
We found that pitchblende contains at least two radioactive materials, one of which, accompanying bismuth, has been given the name polonium, while the other, paired with barium, has been called radium.
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.
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.
In the north, the country's colonial past and the large uranium mines run by French companies have colored some Nigeriens' views about outsiders coming to dig in their deserts.
7月合集 
侵入体白岗岩型
6”
关系，说明钛
，
常水头渗透试验。
后尽可能的用来造原子弹。
特种部队正在保护该
的、自我维持的核反应堆从地下分散的
管理的
