| Business | Phone |
| National Paving & Contr Co 6115 Oakleaf Ave, Baltimore 21215 | (410) 764-7117 |
| P Flanigan & Sons Inc 200 Frankfurst Ave, Baltimore 21225 | (410) 355-5431 |
| Seaboard Asphalt Products Co 3601 Fairfield Rd, Baltimore 21226 | (410) 355-0330 |
| Lafarge Corp 619 Batavia Farm Rd, Baltimore 21237 | (410) 574-2620 |