| Relationships | Role | Relationship Start | Relationship End |
| Dolberg Finance Corporation Establishment | Parent | 11/7/2003 | 7/21/2008 |
| Geotech Establishment | Parent | 11/7/2003 | 7/21/2008 |
| Antofagasta Plc | Parent | 12/27/2002 | 11/6/2003 |
| Andsberg Inversiones Ltd. | Subsidary | 12/27/2002 | 7/21/2008 |