| Seif, Claud A.; Cliffs 1975 Seniority list; 1975 | Cliffs 1975 Seniority list | 1975-00-00 | | |
| Seif, Claud A.; Cliffs 1975 Seniority list; 1975 | Cliffs 1975 Seniority list | 1975-00-00 | TOM M. GIRDLER | Wheelsman |
| Seif, Claud A.; Cliffs Seniority list 6/15/81; 1981 | Cliffs Seniority list 6/15/81 | 1981-00-00 | EDWARD B. GREENE | Watchman |
| Seif, Claud A.; Cliffs Seniority list 6/26/80; 1980 | Cliffs Seniority list 6/26/80 | 1980-00-00 | | |
| Seif, Claud A.; Cliffs Seniority list 6/26/80; 1980 | Cliffs Seniority list 6/26/80 | 1980-00-00 | WILLIS B. BOYER | Wheelsman |
| Seif, Claud A.; Cliffs Seniority list October 1977 | Cliffs Seniority list October 1977 | 1977-00-00 | TOM M. GIRDLER | Wheelsman |