National Institutes of Health http://www.nih.gov/

Centers for Disease Control http://www.cdc.gov/

U.S. Environmental Protection Agency http://www.epa.gov/

Int'l Occupational Safety & Health Information Center http://www.ilo.org/public/english/90travai/cis

National Library of Medicine: Toxicology & Environmental Health Information http://sis.nlm.nih.gov/tehip.cfm

NIOSH http://www.cdc.gov/niosh/homepage.html

OSHA http://www.osha.gov/

American Society of Safety Engineers http://www.asse.org

US Chemical Safety & Hazard Investigation Board http://www.chemsafety.gov/

World Health Organization http://www.who.ch/

NH Department of Environmental Services http://www.des.state.nh.us