| Algoma Central Marine |
Atlantic Towing Ltd. |
American Steamship Co. |
Bethlehem Steel Corporation |
| Branch Lines Inc. |
Canada Steamship Lines |
Cartier Construction |
Cleveland Tankers Inc. |
| Cleveland Cliffs Steamship Co. |
Desgagnes Transport Inc. |
Enerchem Transport Inc. |
Erie Sand Steamship Co. |
| Essroc Canada Inc. |
Ford Motor Company |
Great Lakes Towing Corporation |
Hall Corporation |
| Hindman Transportation |
Imperial Oil |
Inland Lakes Transportation |
Inland Steel Company |
| Interlake Steamship Company |
Kent Line Limited |
Kinsman Lines Inc. |
LaFarge Cement |
| Lower Lakes Towing Inc. |
McKeil Marine Ltd. |
Medusa Cement & Southdown Inc. |
Misener Transportation |
| N.M. Paterson & Sons |
National Steel Corp. |
Oglebay Norton Co. |
Parrish & Heimbecker |
| Provmar Fuels Inc. |
Purvis Marine Ltd. |
Q&O Paper Company |
St. Marys Cement Co. |
| Soconav Incorporated |
The Soo River Company |
United States Steel |
Upper Lakes Shipping |
| Westdale Shipping Ltd. |
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