| Relationships | Role | Relationship Start | Relationship End |
| Kemmerer Corporation, The | Parent | 12/31/1970 | 1/30/1975 |
| New York Mining & Manufacturing Company | Parent | 12/31/1970 | 1/30/1975 |
| Wise Coal & Coke Company | Parent | 12/31/1970 | 1/30/1975 |
| Unette Coproration | Subsidary | 12/31/1970 | 1/30/1975 |