Knox 
Hardin 
  
  
Hardin and Pope 
Lake 
Madison 
Cook 
  
  
  
St. Clair____________ 
Kane 
Sangamon 
Hardin 
Jo Daviesa__________ 
  
Hardin 
  
Hardin and Pope 
Adams 
 do 
Cook 
Adams 
Cook 
Lake 
 
Cook 
 
Douglas____________ 
Abingdon 
 
Rosiclare___________ 
 
Elizabethtown        
Cave-in-Rock 
Rosiclare 
 
Waukegan 
 
Granite City  South Chicago ..~do 
  
  
 
East St. Louis 
 
Maple Park 
 
Springfield 
 
Rosiclare 
 
Galena_____________ 
 
  
 
Elizabethtown_______ 
Cave-in-Rock________ 
Rosiclare___________ 
 
Marblehead 
Quincy 
South Chicago and Thornton. 
Quincy 
McCook 
 
 
Waukegan 
 
Forest Park 
 
Tuscola 
 
Morrison___________ 
 
  
 
Lake Zurich 
 
Rockdale___________ 
 
DeKalb 
 
Waukegan 
 
Champaign 
 
Chicago 
Processed stockpiled crude ore. 
 
Underground mine and mill. 
 Do. 
Underground mines. Mill in Hardin County. 
 
Calcining, fabricating. 
 
 
 
 
 
 
 
 
 
 
 
 
Processed stockpiled crude ore. 
 
Underground mines, ore processed at Graham mill. 
 
 
Underground mine and mill. 
 Do. 
Underground mines. Mill in Hardin County. 
 
Quicklime and hydrated lime, 3 shaft kilns. 
Quicklime, 1 calcimatic kiln. 
Quicklime and hydrated lime, 4 rotary kilns at each plant. 
Quicklime and hydrated lime, 2 shaft kilns. Quicklime, 3 rotary kilns. 
z 
 
 
 
 
 
0 
Psj 
 
 
 
 
 
0 
Whiteride Moss peat.. 
- ~do Reed-sedge peat. 
 
Lake 
Will 
De Kaib 
Lake 
Champaign 
Cook 
Ground feldspar: 
 Briggs Manufacturing Co 
Flvorspar: 
 Aluminum Company of America 
 Mincrva Oil Co.: 
Crystal Group__________________________ 
Minerva No. 1 
 Ozark-Mahoning Co 
Gypsum: 
 National Gypsum Co 
Iron and steel: 
 Granite City Steel Co________________________ 
 Interlake Steel Corp_________________________ 
 Republic Steel Corp 
 United States Steel Corp 
 Wisconsin Steel Division, International Harvester Co_ Iron oxide pigments:

 Char. Pfizer & Co., Inc., Minerals, Pigments & Metals 
Division. 
 Geo. B. Smith Chemical Works, Inc 
 Tamms Industries Co 
Lead and zinc: 
 Aluminum Company of America 
 Eagle-Picher Industries, Inc.: 
Blackjack and Rehm-Bauer 
Graham mill___________________________ 
 Minerva Oil Co.: 
Crystal Group 
Minerva No. 1 
 Ozark-Mahoning Co 
Lime: 
 Marblehead Lime Co 
Do 
Do 
 
 MenkeStone&LimeCo______________________ 
 Standard Lime & Refractories Co., Division Martin 
Mazietta Corp. 
Magnesium compounds: 
 Johns-Manville Product Corp 
Ground mica: 
 U.S. Mica Co., Inc 
Natural Gas Procer sing: 
 U.S. Industrial Chemical Co., Division of National 
Distillers & Chemical Corp. 
Peat: 
 Anderson Peat Co 
 Markman Peat Co 
Expanded perlite: 
 Filter Materials Corp________________________ 
 Johnr-Manville Perlite Corp 
 Mica Pellets, Inc____________________________ 
 National Gypsum Co 
 Ryolex Corp                                
 Silbrico Corp