| Business | Phone |
| Atlantic Welders Inc 5730 Pennington Ave, Baltimore 21226 | (410) 355-1869 |
| Ndt Machining & Fabrication 781 Seawall Rd, Baltimore 21221 | (410) 391-3873 |
| Collins Machine Co Inc 1009 Booth St, Baltimore 21223 | (410) 539-1830 |
| Dsi 1701 Ridgely St, Baltimore 21230 | (410) 752-2514 |
| F & F Machine Grinding Inc 720 Debelius Ave, Baltimore 21205 | (410) 488-4650 |
| Promatec 8100 Fort Smallwood Rd, Baltimore 21226 | (410) 437-7312 |
| Toper Mfg Co 6427 Baltimore National Pike, Baltimore 21228 | (410) 744-9110 |
| Voest-Alpine Svc & Tech 4611 North Point Blvd, Baltimore 21219 | (410) 477-1181 |