| Business | Phone |
| Tin Man Sheet Metal Fbrctn 9218 Prince William St, Manassas 20110 | (703) 335-8191 |
| Tower Hill Corp 8707 Quarry Rd F, Manassas 20110 | (703) 368-7727 |
| Staples Research Corp 7036 Tech Cir, Manassas 20109 | (703) 335-1301 |
| E & M Sheetmetal & Roofing Inc 9203 Enterprise Ct H, Manassas 20111 | (703) 369-5319 |