Dave Barnes describes what happens during an underground nuclear blast
 Audio credit: Audio courtesy Doug Schneider, 91视频 Sea Grant College Program 
                           Filename: Amchitka-Barnes.mp3
                           Download a transcript of this audio. (WORD 30K) 
  
When a nuclear bomb explodes far underground, the intense heat quite literally melts the surrounding rock into glass. In theory at least, scientists say this glass tomb will contain the blast鈥檚 massive levels of radiation for the 100,000 years or longer it takes for the radiation levels to become safe. UAF researcher David Barnes says radiation is likely to eventually begin making its way through the island.
Image credit: Image courtesy of Consortium for Risk Evaluation with Stakeholder Participation
                           II (CRESP) Amchitka Independent Science Assessment.
                           Filename: diagram.gif 
				
