| Business | Phone |
| Advanced Locating Svc 6460 2 St Se, Calgary T2H 1J4 | (403) 255-9399 |
| Alberta Locators 336 40 Ave Ne, Calgary T2E 2M7 | (403) 277-3300 |
| Promark Utility Locators Inc 4538 Manilla Rd Se, Calgary T2G 4B7 | (403) 243-9794 |
| Tracker Pipeline & Utility 8032 34 Ave Nw, Calgary T3B 1P7 | (403) 288-1196 |
| Canadian Locators Inc 2710 17 Ave Se #750, Calgary T2A 0P6 | (403) 263-6470 |