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61. Some 1950 million years ago, sufficient uranium was precipitated from solutions in the rocks at Oklo to reach critical mass.

62. The fuel for the plants came from several uranium mines located around the country.

63. There were mines for copper, lead, cobalt. nickel, antimony, manganese and uranium.

64. Depleted uranium is used in the nose of armour-piercing shells because its density helps it to punch through modern tanks.

65. Plutonium is not found naturally on earth, but it is produced whenever uranium is used in a nuclear reactor.

66. Depleted uranium is used to make anti-tank shells more deadly, and tank armour less penetrable.

67. Quite apart from acquiring the land, he had been charged with getting hold of large quantities of uranium.

68. The only sure way to reduce the danger is to reduce the world's store of uranium and plutonium.

69. Some 25 pounds of enriched uranium were apparently salvaged from Osirak.

70. He joined Anglo in 1968, learning the mining trade in the firm's diamond, gold and uranium divisions.

71. Like the rate of decrease in nitrogen, the rates of increase in fluorine and uranium depend strongly on local factors.

72. Veins of pitchblende in the cliff are the source of uranium in the flat floodplain deposits at the foot of the cliff.

73. Uranium and thorium entered lay vocabularies even as world markets for them were spawned.

74. Donegal in December 1979 but the story of uranium mining actually begins three years further back.

75. Bailey emphasized that officials do not want to rupture any of the 236 uranium fuel rods in the lone remaining assembly.

76. The Royal Society is also conducting research on the effect of depleted uranium on health.

77. In January 1980 mining shares rose on the back of media reports of uranium finds.

78. Radon has been used to detect uranium mineralisation and also to locate faults which may control mineral deposition.

79. The company fears that uranium dust sealed inside the machine could jam the mechanism that controls the shutters.

80. Early in 1995, six more pounds of uranium fuel turned up 1,(www.Sentencedict.com) 500 miles away in Czechoslovakia.

81. It is located throughout the grains of minerals that contain traces of uranium and thorium, not on grain surfaces.

82. Defence minister Rudolf Scharping is under pressure over the use of weapons containing depleted uranium in the Balkans.

83. Cells of the bacteria were heavily mineralised with uranium, calcium, vanadium, bismuth, selenium and sulphur.

84. The applicability of such data derived from uranium miners to the general population is central to the radon issue.

85. Depleted uranium shells used by the Allies are strewn around.

86. Helium is also made by radioactive decay of uranium and thorium, both of which decay by emission of alpha particles.

87. Most of the world's nuclear reactors are termed thermal reactors and are fuelled by natural or enriched uranium.

88. It would also make extremely efficient use of potentially dwindling uranium supplies.

89. Of these, uranium and thorium can be used to generate power in nuclear reactors.

90. Alongside the other strategic arguments in its favour, the economics of the uranium fuel cycle had been taken for granted.