Occupational Safety & Health Administration (OSHA) http://www.osha.gov/
Material Safety Data Sheets http://www.siri.org/msds/index.php
Environmental Protection Agency (EPA) http://www.epa.gov/
Department of Transportation (DOT) http://www.dot.gov/
Center for Disease Control (CDC) http://www.cdc.gov/
National Highway Traffic Safety Administration (NHTSA) http://www.nhtsa.dot.gov/
Federal Emergency Management Agency (FEMA) http://www.FEMA.gov/