| 41. | Marie Curie used pitchblende, processing tons of it herself, as the source material for her isolation of radium in 1898.
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| 42. | After numerous experiments in the ESPCI laboratories, she found out that pitchblende was 4 times more radioactive than uranium or thorium.
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| 43. | Desperately he informs them of his family's mine back home that contains pitchblende, tungsten, and other precious metals.
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| 44. | Zippeite is no longer used for the manufacture of paints, but is still used as a uranium ore, as is pitchblende.
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| 45. | This misconception prompted the band to cheekily rename itself The Pitchblende Quartet for its final 1995 album, " Gygax ! ".
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| 46. | A principal source for radium is pitchblende, which holds a total of 257 mg of radium per ton of U 3 O 8.
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| 47. | Although the zinc skarn and the pitchblende vein are exposed in the same workings, the pitchblende appears to have been deposited much later.
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| 48. | Although the zinc skarn and the pitchblende vein are exposed in the same workings, the pitchblende appears to have been deposited much later.
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| 49. | Although radium had been discovered in 1898, it had been derived from pitchblende, and the radium content of carnotite was not known.
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| 50. | The mines were forced out of business in 1923, when rich pitchblende deposits in the Belgian Congo forced down the price of radium.
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