River Rouge do Quicklime, two rotary kilne. 
Wyandotte do Quicklime, nine shaft kilna. 
 
Alma                   
Gratiot 
 
 
Mt. Pleasant              
Isabella 
 
 
Detroit                  
Muskegon                
West Branch              
Flat Rock                
Trenton                      
Wayne 
Muskegon 
Ogemaw 
Wayne 
 do 
 
 
Imlay City               
New Hudson              
Lapeer          
Oakland         
Reed-sedge. 
Humus. 
 
Sandusky                
Imlay City         
- - .. do                       
Capac                   
Minden City              
Sanilac         Lapeer          
 do         St. Clair        Sanilac          
Mnss and reed-sedge. 
Reed-sedge. 
Reed-sedge bog extends into St. 
Reed-sedge, bog extends into 
Reed-sedge. 
 Clair County. Lapeer County. 
Do Midland Midland 
Great Lakes Chemical Corp 
Harbison-Walker Refractories Co_____________ 
Hooker Chemical Corp 
International Salt Co., Inc                   
Kaiser Aluminum & Chemical Corp___________ 
Manistee Salt Works, Division Hardy Salt Co...~... 
Michigan Chemical Corp 
 Do_______________________________ 
LTJ ITJ 
Filer City_______________ 
Ludington 
Montague 
Detroit_________________ 
Midland 
Manistee_______________ 
East Lake 
St. Lpuis 
Manistee        
Mason 
Muskegon        
Wayne_________ 
Midland         
Manistee..     
- - - do 
Gratiot_________ 
Salt. 
Do. 
Bromine, calcium compounds, and magnesium compounds. 
Bromine, calcium compounds, iodine, magnesium cornpcunds, potash, and salt.

Bromine. Plant closed in June. 
Magnesium compounds. 
Salt. 
Underground salt mine. 
Magnesium compounds. 
Salt. 
Bromine. 
Bromine, calcium compounds, magnesium compounds, and salt. 
Bromine, calcium compounds, and magnesium com 
  pounds. 
- - - do Salt. 
Mayville Lapeer Calcium compounds. 
Wyandotte Wayne Calcium compounds and salt. 
 Marblehead Lime Co 
 Wyandotte Chemicals Corp 
Petroleum refineries: 
 Bay Refining, Division Dow Chemical Co.. 
 Crystal Refining Co 
 Lakeside Refining Co 
 Leonard Refineries, Inc.: 
 Leonard Division 
 Roosevelt Division____________________ 
 Marathon Oil Co 
 Naph-Sol Refining~ Co 
 Osceola Refining Co 
 Petroleum Specialties, Inc__________________ 
 Socony Mobil Oil Co                      
Peat: 
 Anderson Peat Co 
 Fletcher & Rickard                        
 Green Thumb Peat Co., Inc 
J. M. Huber Corp 
 Michigan Peat 
 Do_______________________________ 
 Do_______________________________ Expanded perlite: 
 Bestwall Gypsum Division, Georgia-Pacific Corp - 
 National Gypsum Co 
 United States Gypsum Co Salt and salines: 
 American Salt Corp______________________ 
 Diamond Crystal Salt Co__________________ 
 The Dow Chemical Co 
Morton Chemical Co., Division Morton International, Inc. 
Morton Salt Co., Division Morton International, Inc. 
 Do.. 
Pennsalt Chemicals Corp 
Standard Lime & Refractories Co., Division of Martin Marietta Corp. 
Wilkinson Chemical Corp 
Wyandotte Chemicals Corp_________________ 
 
 
 
 See footnotes at end of table. 
Bay City Bay 
Carson City Montcalm 
Kalamazoo Kalamazoo 
Grand Rapids Kent 
National City losco 
Detroit Wayne 
Midland Midland 
St. Clair St. Clair 
Ludington Mason 
Manistee_ _ Manistee 
- - - do 
Port Huron St. Clair    Do. 
Wyandotte Wayne Do. 
Manistee Manistee Magnesium compounds. 
w 
' -l 
 
 
0 
 
 
a 
 
a