| 11. | Nuclear explosions produce radiation and radioactive debris.
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| 12. | He spent 16 months at Chernobyl picking up radioactive debris and made good money by Soviet standards.
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| 13. | A Soviet defense satellite plunged out of control and left radioactive debris in the Canadian Arctic in 1978.
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| 14. | 1961-Cloud of radioactive debris moves across central Siberia after Soviets explode what is called biggest man-made nuclear bomb.
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| 15. | Such a device would not trigger a nuclear explosion, but would use conventional explosives to spread radioactive debris.
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| 16. | This was not the first time radioactive debris had fallen to Earth as the result of a spacecraft accident.
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| 17. | In 1978 a complete failure brought one satellite crashing down on northern Canada, scattering radioactive debris across the tundra.
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| 18. | The catastrophic fire in the graphite neutron moderator compounded the problem, sending massive amounts of radioactive debris into the atmosphere.
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| 19. | The area offers an unparalleled opportunity to fully understand the passage of radioactive debris through an urban and rural area.
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| 20. | There were four techniques examined : measurement of acoustic waves, seismic signals, and radio waves, and inspection of radioactive debris.
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