| Business | Phone |
| Fdc 5100 Springfield St # 516, Dayton 45431 | (937) 252-3188 |
| Floyd Browne Assoc Inc 4080 Executive Dr, Dayton 45430 | (937) 431-1004 |
| General Dynamics Advanced Info 5200 Springfield St # 200, Dayton 45431 | (937) 253-4770 |
| General Energy Corp 4134 Linden Ave # 201, Dayton 45432 | (937) 254-0522 |
| International Consultants Inc 4032 Linden Ave, Dayton 45432 | (937) 252-0341 |
| Jacobs Sverdrup Technology 4200 Colonel Glenn Hwy # 500, Dayton 45431 | (937) 429-5056 |
| Kenton Trace Technologies 2661 Commons Blvd, Dayton 45431 | (937) 427-4291 |
| Mac Aulay-Brown Inc 4021 Executive Dr, Dayton 45430 | (937) 426-3421 |
| Mc Crate-Shaw Consultants 4393 Dayton Xenia Rd, Dayton 45432 | (937) 427-8989 |
| Amg Inc 1497 Shoup Mill Rd, Dayton 45414 | (937) 274-0736 |
| Argus & Assoc 2612 Needmore Rd # 103, Dayton 45414 | (937) 278-8320 |
| Riverside Research Institute 5100 Springfield St # 520, Dayton 45431 | (937) 252-5340 |
| Schafer Corp 1430 Oak Ct, Dayton 45430 | (937) 431-8643 |
| Beville Engineering Inc 280 Regency Ridge Dr # 2000, Dayton 45459 | (937) 434-1093 |
| Building System Engineering 585 Congress Park Dr, Dayton 45459 | (937) 312-0217 |
| Burkhardt Engineering Co 6400 Bigger Rd, Dayton 45459 | (937) 436-7330 |
| Skyward Ltd 5100 Springfield St, Dayton 45431 | (937) 252-2710 |
| Sra Adroit 5100 Springfield St # 210, Dayton 45431 | (937) 910-6400 |
| Steinbicker & Assoc Inc 925 Factory Rd # 201, Dayton 45434 | (937) 429-2759 |
| Vti Inc 4200 Colonel Glenn Hwy # 800, Dayton 45431 | (937) 427-1104 |
| Contech Design Inc 519 Windsor Park Dr, Dayton 45459 | (937) 435-3722 |
| Woolpert Inc 409 E Monument Ave, Dayton 45402 | (937) 461-5660 |
| Datel Engineering Co 511 Progress Rd, Dayton 45449 | (937) 859-0910 |
| Daysys Inc 714 E Monument Ave, Dayton 45402 | (937) 224-7977 |
| Utility Systs Engineering Inc 7601 Paragon Rd # 101, Dayton 45459 | (937) 433-8262 |
| Development Works 623 Congress Park Dr, Dayton 45459 | (937) 428-7578 |
| Entra Services 4500 Wadsworth Rd, Dayton 45414 | (937) 277-7899 |
| Summit Engineering 77 W Elmwood Dr, Dayton 45459 | (937) 433-7798 |
| Task Controls & Computers Co 7345 Far Hills Ave, Dayton 45459 | (937) 433-5033 |
| Tec Engineering 77 W Elmwood Dr # 200, Dayton 45459 | (937) 435-8828 |
| Galehouse Engineering Cnsltnts 3216 Deweese Pkwy, Dayton 45414 | (937) 277-6535 |
| Stan & Assoc Inc 7750 Paragon Rd, Dayton 45459 | (937) 438-0177 |
| Haley-Dusa Enginnering Group 270 Regency Ridge Dr # 203, Dayton 45459 | (937) 439-4300 |
| Heapy Engineering 1400 W Dorothy Ln, Dayton 45409 | (937) 224-0861 |
| Helmig Lienesch & Assoc 410 S Jefferson St, Dayton 45402 | (937) 228-4007 |
| Jones-Warner Assoc 1025 E Centerville Station Rd, Dayton 45459 | (937) 439-9868 |
| Professional Serv Inc 3323 Stanley Ave, Dayton 45404 | (937) 222-7401 |
| Qei Engineers 561 Congress Park Dr, Dayton 45459 | (937) 438-8635 |
| Quest Engineering 438 Windsor Park Dr, Dayton 45459 | (937) 435-0500 |
| Reinke & Assoc 959 Congress Park Dr, Dayton 45459 | (937) 434-4810 |
| Pacific Century Engineering 1704 E 3rd St, Dayton 45403 | (937) 256-8900 |
| Physics Applications Inc 7635 Wilmington Pike, Dayton 45458 | (937) 439-1723 |
| Klh Engineers 333 W 1st St, Dayton 45402 | (937) 220-9700 |
| Brian Kosmal 2101 Far Hills Ave, Dayton 45419 | (937) 294-8589 |
| Mound Engineering & Analysis 153 Shenandoah Trl, Dayton 45449 | (937) 432-1940 |
| Nauman & Zelinski 204 S Ludlow St # 320, Dayton 45402 | (937) 223-3821 |
| Northwest Consultants 1167 Lyons Rd # E, Dayton 45458 | (937) 291-9092 |
| Ljb Inc 3100 Research Blvd, Dayton 45420 | (937) 259-5000 |
| Miller Engineering Group 581 Congress Park Dr, Dayton 45459 | (937) 434-5352 |