| Business | Phone |
| Cold Springs Excavating Co 1097 Palms Rd, Columbus 48063 | (810) 367-3621 |
| Mike's Excavating & Devmnt 1848 Ponderosa Ave, Columbus 48063 | (586) 727-3521 |
| Oppers Excavating Inc 10336 Gratiot Ave, Columbus 48063 | (586) 727-1960 |
| R G Eisenhardt Inc 9738 Gratiot Ave, Columbus 48063 | (586) 727-2233 |