| Relationships | Role | Relationship Start | Relationship End |
| Bhc Resources, Inc. | Parent | 12/31/1980 | 12/30/1981 |
| Services Management Group-Illinois, Inc. | Subsidary | 12/31/1980 | 12/30/1981 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| C.I.R.I. Corporation | Buyer | Discontinued | 12/31/1981 |