| Business | Phone |
| Markley's Pile Driving 219 Nanticoke Rd, Baltimore 21221 | (410) 682-2261 |
| Rehbein & Son 1426 Burke Rd, Baltimore 21220 | (410) 335-4037 |
| Ace Marine Construction Baltimore 21222 | (410) 676-6595 |
| Joe's Marine Construction 7320 Greenbank Rd, Baltimore 21220 | (410) 335-3321 |