Developing concerns on potential impacts of nanopartilces.
See:  http://www.southbendtribune.com/article/20100511/News01/5110313/1011/News
          Rich Hackel, OSC 
Emergency Response Section, NRO
Indiana Department of Enviromental Management
Cell 574 / 274-9103
574 / 245-4876   fx 245-4877 
rhackel at idem.in.gov