| Gen. Electric/ Willoughby, Ohio |
General Electric Co. |
Private |
|
Silica |
| Gordon-Warren/ Wickliffe, Ohio |
Gordon-Warren Co. |
Private |
|
Abrasives |
| Jones & Laughlin/ Louisville, Ohio |
|
Private |
|
Iron |
| Mentor Sand and Supply Pit |
|
Private |
|
Sand and Gravel |
| Morton Salt Co |
|
Private |
|
Sodium |
| Morton Salt Fairport Harbor Mine |
Morton Salt Co. |
Private |
|
Sodium |
| Painesville Pit |
|
Private |
|
Sand and Gravel |
| Quartz Scientific Inc/ Eastlake, Oh |
Quartz Scientific, Inc. |
Private |
|
Silica |
| Republic Steel Lime Plant |
Republic Steel Corp. |
Private |
|
Calcium |
| Sidley's Painesville Pit |
R. W. Sidley, Inc. |
Private |
|
Sand and Gravel |
