| generate electricity | 0.46 |
| drop on nagasaki | 0.45 |
| cause cancer | 0.42 |
| undergo fission | 0.38 |
| drop on japan | 0.35 |
| undergo alpha-decay | 0.29 |
| stay in the body | 0.27 |
| continue to expose surr… | 0.24 |
| linger for year | 0.16 |
| opt for implosion | 0.16 |
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| toxic | 0.73 |
| radioactive | 0.43 |
| man-made | 0.41 |
| safe | 0.35 |
| reactive | 0.33 |
| stable | 0.33 |
| more dangerous | 0.27 |
| difficult | 0.27 |
| pyrophoric | 0.27 |
| carcinogenic | 0.24 |
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| element | 0.45 |
| rare element | 0.29 |
| produced in reactor | 0.79 |
| produced | 0.75 |
| used in nuclear weapons | 0.55 |
| released | 0.51 |
| separated | 0.50 |
| used as fuel | 0.49 |
| used in the 1962 test | 0.45 |
| recycled | 0.43 |
| manufactured at the site | 0.43 |
| used in first nuclear b… | 0.43 |
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