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