This pdf lists all USDA-inspected processors, meat and poultry, in Michigan, as of March 2012.
The list was provided by Michigan State University Extension Meat Specialist Jeannine Schweihofer.
Searchable database of all plants in the state; license type (including type of inspection) given in results search results. Data regularly updated by Cooperative Extension and Market Maker.
On the homepage, click Begin Your Search. Under Business Type, select "Processor." Under Line of Business, select "Meat Products," then click Find a Business.