| Commercial offices | Schedule | Telephones |
| OC Minas | 8:00 am - 5:00 pm | 646592 |
| OC Sumidero | 8:00 am - 5:00 pm | 737231 |
| OC Santa Lucia | 8:00 am - 5:00 pm | 648148 |
Minas de Matahambre
| Commercial offices | Schedule | Telephones |
| OC Minas | 8:00 am - 5:00 pm | 646592 |
| OC Sumidero | 8:00 am - 5:00 pm | 737231 |
| OC Santa Lucia | 8:00 am - 5:00 pm | 648148 |