Plutonium. Sources for information about radiation are the Ameri

1. can Nuclear Society and the
   U.S. Nuc   
   
   
2. lear Regulatory Commission. Radiation at Trinity Site
3. Radiation levels in the fenced, ground zero area are very low. Th
4. e maximum levels are only 10 times greater than the region's na
   tural bClick hereackground radiation. Many places
5. on Earth are naturally more radioactive than Trinity Site. A one-hour visit to the inner fenced area
6. will result in a whole body exposure of one-half to one millirem. The

levels vary from place to place, depending on the concentration of Trinitite buried at a

ny one spot. To put this in perspective, Americans receive an average of 620 m