http://emergency.cdc.gov/preparedness/shelter/index.asp Emergency Preparedness and Response page http://emergency.cdc.gov/preparedness/shelter/index.asp shelter in place Sheltering in Place During a Chemical Emergency Shelter in Place http://emergency.cdc.gov/preparedness/shelter/index.asp shelter in place Sheltering in Place During a Chemical Emergency http://emergency.cdc.gov/preparedness/shelter/index.asp information is from the CDC CDC "Shelter in Place" Sheltering in Place During a Chemical Emergency