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