When did Michigan's last smoking law go into effect?
The best place to look for this information is the state government website: http://www.michigan.gov/ Search for "smoking ban". 4th or the 5th link in the results talk about governor signing the bill on this. The site contains details: www.michigan.gov/smokefreelaw Second link here The Dr. Ron Davis Smoke Free Air Law is more thorough.
Thanks for choosing to use ASK US service. Contact your campus library for further assistance.