| Business | Phone |
| Anrep Krieg Desilets Gravelle 101 Worthington St E #204, North Bay P1B 1G5 | (705) 474-7000 |
| B H Martin Consultants Ltd 600 Gormanville Rd, North Bay P1B 9S7 | (705) 840-1523 |
| John D Paterson & Assoc Ltd 63 Gibson St, North Bay P1B 8Z4 | (705) 472-5331 |
| Knight Piesold 34 Commerce Cres, North Bay P1B 8G4 | (705) 476-2165 |
| Northland Engineering Ltd 1850 Bond St, North Bay P1B 4V6 | (705) 474-2720 |
| Piotrowski Consultants Ltd 1820 Bond St, North Bay P1B 4V6 | (705) 472-2536 |
| Steam Flow Power 433 Mcintyre St E, North Bay P1B 1E1 | (705) 475-1994 |
| Bry-Co Engineering Ltd 920 Bloem St, North Bay P1B 4Z8 | (705) 472-3812 |
| D T Fudge & Assoc 160 Bryan Rd, North Bay P1C 1C2 | (705) 472-3053 |
| Earth Tech Inc 222 Mcintyre St W #410, North Bay P1B 2Y8 | (705) 472-7520 |