| Relationships | Role | Relationship Start | Relationship End |
| Mg Technologies Ag | Parent | 12/31/1991 | 12/30/1993 |
| Mgpc Petcoke Inc. | Subsidary | 12/31/1992 | 12/30/1993 |
| Mgpc Petcoke Inc. | Subsidary | 12/31/1991 | 12/30/1992 |
| Relationships | Role | Relationship Start | Relationship End |
| Mg Technologies Ag | Parent | 12/31/1991 | 12/30/1993 |
| Mgpc Petcoke Inc. | Subsidary | 12/31/1992 | 12/30/1993 |
| Mgpc Petcoke Inc. | Subsidary | 12/31/1991 | 12/30/1992 |