| Business | Phone |
| Aah Gas Inc 1157 Rymal E, Hamilton | (905) 318-0893 |
| Petro-Canada 15 Windermere Rd, Hamilton L8H 3Y2 | (905) 543-0673 |
| W T Chatham Assoc Ltd 20 Jackson St W #410, Hamilton L8P 1L2 | (905) 525-3700 |
| Can-Tronics Gas Measurement 16 Harlowe Rd, Hamilton L8W 3R6 | (905) 574-6488 |
| Eco Efficiency 1308 King St E #4, Hamilton L8M 1H1 | (905) 312-8251 |
| Dominion Energy Resources Ltd 646 Main St E, Hamilton L8M 1J8 | (905) 545-8710 |