fyi: I have the ATSDR report on chemical terrorism at: http://www.mapcruzin.com/scruztri/docs/cep1118992.htm mike Michael R. Meuser meuser@mapcruzin.com GIS, Pollution Maps, WebMaps, Training, Research "Making data make sense" http://www.mapcruzin.com/meuser/ Join WebMap Discussion List: webmaps-subscribe@listbot.com