| Owner | Manager | From | Until | | Steel Company of Canada (Stelco) | | | Scrapped |
|
| Fleet | From | Until | | Lake Superior Iron Company - Marquette, Michigan | | 1900 |
| Atlas Steamship Company - Duluth, Minnisota | | 1928/02/14 |
| Eastern Terminal Elevator Company - Port Arthur, Ontario | | 1942 |
| Diamond Steamship Company | | 1951 |
| Pittsburgh Steamship Company - Duluth, Minnesota | 1948/08 | 1951/07 |
| Reoch Transports Ltd. - Toronto, Ontario | 1959 | 1963 |
| Hindman Transportation Company Ltd. - Owen Sound, Ontario | 1964 | 1978 |
|