| Business | Phone |
| Bowers Excavating 2130 Missouri Loop N, Mandan 58554 | (701) 663-5619 |
| Do-Mor Inc 2311 3rd St Se, Mandan 58554 | (701) 663-5240 |
| Klesalek Excavating 300 Bis Man Ave, Mandan 58554 | (701) 663-6879 |
| Kaelberer Construction 1101 40th Ave Se, Mandan 58554 | (701) 663-5313 |