| Business | Phone |
| Arbitron Engineering Ltd 10201 Southport Rd Sw #860, Calgary T2W 4X9 | (403) 258-1335 |
| Ashton Jenkins & Assoc Ltd 734 7 Ave Sw #1400, Calgary T2P 3P8 | (403) 232-6206 |
| Icon Engineering Inc 1010 1 St Sw #470, Calgary T2R 1K4 | (403) 269-8486 |
| Kozowyk & Assoc 717 7 Ave Sw #1550, Calgary T2P 0Z3 | (403) 233-0649 |
| Lochend Associates Ltd Po Box 2096 Stn M, Calgary T2P 2M4 | (403) 270-7899 |
| Neotechnology Consultants Ltd 1701 Centre St Nw #510, Calgary T2E 7Y2 | (403) 277-6688 |
| Newbert Petroleum Engineering 840 6 Ave Sw #300, Calgary T2P 3E5 | (403) 266-4925 |
| Nimbus Projects Ltd 707 7 Ave Sw #300, Calgary T2P 3H6 | (403) 266-3669 |
| North Of 60 Engineering Ltd 800 5 Ave Sw #1400, Calgary T2P 3T6 | (403) 263-2121 |
| Nrg Engineering Ltd 505 8 Ave Sw #515, Calgary T2P 1G2 | (403) 262-3346 |
| Osis Consulting Svc Ltd 59 Glamorgan Dr Sw, Calgary T3E 4Z3 | (403) 246-3178 |
| Petro Math Ltd 703 6 Ave Sw #200, Calgary T2P 0T9 | (403) 503-0811 |
| Porteous Engineering Ltd 5008 Nesbitt Rd Nw, Calgary T2K 2N5 | (403) 289-7705 |
| Robert Stevens & Assoc Engrng 731 Parkwood Way Se, Calgary T2J 3V2 | (403) 225-2248 |
| Barbara Howes Petroleum Inc 5535 Dalwood Way Nw, Calgary T3A 1S6 | (403) 288-5056 |
| Straus Engineering Ltd 221 Varsity Estates Mews Nw, Calgary T3B 3C9 | (403) 286-1351 |
| Sumi Engineering 2451 Dieppe Ave Sw #144, Calgary T3E 7K1 | (403) 264-5177 |
| Tanner Engineering Ltd 111 Coventry Lane Ne, Calgary T3K 4G4 | (403) 226-2525 |
| Titan Snc-Lavalin Inc 703 6 Ave Sw #800, Calgary T2P 0T9 | (403) 261-6350 |
| Tundra Engineering Ltd 633 6 Ave Sw #950, Calgary T2P 2Y5 | (403) 777-2477 |
| Chapman Petroleum Eng Ltd 708 11 Ave Sw #445, Calgary T2R 0E4 | (403) 266-4141 |
| Citidal Engineering Ltd 140 4 Ave Sw #1000, Calgary T2P 3N3 | (403) 264-6551 |