| Business | Phone |
| L B Foster Co 7015 Fairbanks N Houston Rd, Houston 77040 | (713) 466-2706 |
| A & K Railroad Materials Inc 5206 Fm 1960 Rd W 103, Houston 77069 | (281) 893-3908 |
| Ferrosteel International 10227 Glenkirk Dr, Houston 77089 | (281) 484-0360 |
| Lt Resources Inc 13910 Champion Forest Dr, Houston 77069 | (281) 444-3494 |
| Houston Rail & Locomotive 5722 Fairdale Ln, Houston 77057 | (713) 783-7422 |