Here are some links we think you will find useful:

American Industrial Hygiene Association (AIHA)

http://www.aiha.org

AIHA-Indiana, Sponsoring Local Section

http://www.aiha.org/localsections/html/Indiana/default.asp

AIHA-Chicago

http://www.chicagoaiha.org/

American Conference of Governmental Industrial Hygenists

http://www.acgih.org

National Institute for Occupational Safety and Health

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

The Occupational Safety and Health Administration

http://www.osha.gov

The Environmental Protection Agency

http://www.epa.gov

The American Society of Safety Engineers

http://www.asse.org/

The School of Health Sciences at Purdue University f

http://www.healthsciences.purdue.edu/

The Purdue University Website

http://www.purdue.edu